After moving to a small town, I took several pairs of shoes to the shoemaker to be fixed. Within a week I picked them up and put them away in my closet. Four months later my husband and I were invited out to dinner. I unboxed a pair of high heels . I hadn't worn them since they were repaired. I put one shoe on my right foot, and then I put the other on my left. I took both shoes off for a closer look. They were exactly the same style, color1 and size, but each was for the right foot. I was puzzled, since I had worn the shoes on several occasions and knew I hadn't worn two right shoes. Then I thought of the shoemaker. Although I was sure he wouldn't remember me after such a long time, I telephoned him and explained to him the trouble I had. "Thank goodness you finally called!" he was nearly shouting, "An angry woman with two left shoes has been bothering for months!" When the shoemaker received the writer's telephone call,   _  .
he might be very surprised he must be very sad he was very much worried his mind was set at rest
Question: After moving to a small town, I took several pairs of shoes to the shoemaker to be fixed. Within a week I picked them up and put them away in my closet. Four months later my husband and I were invited out to dinner. I unboxed a pair of high heels . I hadn't worn them since they were repaired. I put one shoe on my right foot, and then I put the other on my left. I took both shoes off for a closer look. They were exactly the same style, color1 and size, but each was for the right foot. I was puzzled, since I had worn the shoes on several occasions and knew I hadn't worn two right shoes. Then I thought of the shoemaker. Although I was sure he wouldn't remember me after such a long time, I telephoned him and explained to him the trouble I had. "Thank goodness you finally called!" he was nearly shouting, "An angry woman with two left shoes has been bothering for months!" When the shoemaker received the writer's telephone call,   _  .
A. he might be very surprised
B. he must be very sad
C. he was very much worried
D. his mind was set at rest
Answer: