After her husband had gone to work, Mrs Richards send her children to school and went upstairs to her bedroom. She was too excited to do any housework that morning.  In the evening she would go to a fancy dress party with her husband. She wanted to dress up as a ghost and as she had made her costume the night before, she was impatient to try it on. Though the costume consisted only of a sheet, it was really splendid. After putting it on, She went downstairs to find out whether it would be comfortable to wear. Just as Mrs Richards was entering the dining-room, there was a knock on the front door. She knew it must be the baker. She had told him to come straight in if ever she failed to open the door and to leave the bread on the table. Not wanting to frighten the poor man, she quickly hid in the small store-room under the stair. She heard the front door opened and heavy footsteps in the hall. Suddenly the door of the store-room was opened and in came a man. Mrs Richards realized it must be the man from the Electricity Board who had come to read the meter. She tried to explain the situation, saying "It's only me. "but it was too late, the man let out a cry and jumped back several paces. When Mrs Richards walked towards him, he fled, losing the door heavily behind him. The reason for Mrs Richards' excitement that day was that  _  .
she had sent her children to school she was to attend an evening party she wouldn't do any housework that morning she had made a special costume the night before
Question: After her husband had gone to work, Mrs Richards send her children to school and went upstairs to her bedroom. She was too excited to do any housework that morning.  In the evening she would go to a fancy dress party with her husband. She wanted to dress up as a ghost and as she had made her costume the night before, she was impatient to try it on. Though the costume consisted only of a sheet, it was really splendid. After putting it on, She went downstairs to find out whether it would be comfortable to wear. Just as Mrs Richards was entering the dining-room, there was a knock on the front door. She knew it must be the baker. She had told him to come straight in if ever she failed to open the door and to leave the bread on the table. Not wanting to frighten the poor man, she quickly hid in the small store-room under the stair. She heard the front door opened and heavy footsteps in the hall. Suddenly the door of the store-room was opened and in came a man. Mrs Richards realized it must be the man from the Electricity Board who had come to read the meter. She tried to explain the situation, saying "It's only me. "but it was too late, the man let out a cry and jumped back several paces. When Mrs Richards walked towards him, he fled, losing the door heavily behind him. The reason for Mrs Richards' excitement that day was that  _  .
A. she had sent her children to school
B. she was to attend an evening party
C. she wouldn't do any housework that morning
D. she had made a special costume the night before
Answer: