Landco purchased a large tract of land intending to construct residential housing on it. Landco hired Poolco to build a large inground swimming pool on the tract. The contract provided that Poolco would carry out blasting operations that were necessary to create an excavation large enough for the pool. create an excavation large enough for the pool. The blasting caused cracks to form in the walls of Plaintiff's home in a nearby residential neighborhood. In Plaintiff's action for damages against Landco, Plaintiff should 
prevail, only if Landco retained the right to direct and control Poolco's construction of the pool.  prevail, because the blasting that Poolco was hired to perform damaged Plaintiff's home.  not prevail, if Poolco used reasonable care in conducting the blasting operations.  not prevail, if Landco used reasonable care to hire a competent contractor. 
Question: Landco purchased a large tract of land intending to construct residential housing on it. Landco hired Poolco to build a large inground swimming pool on the tract. The contract provided that Poolco would carry out blasting operations that were necessary to create an excavation large enough for the pool. create an excavation large enough for the pool. The blasting caused cracks to form in the walls of Plaintiff's home in a nearby residential neighborhood. In Plaintiff's action for damages against Landco, Plaintiff should 
A. prevail, only if Landco retained the right to direct and control Poolco's construction of the pool. 
B. prevail, because the blasting that Poolco was hired to perform damaged Plaintiff's home. 
C. not prevail, if Poolco used reasonable care in conducting the blasting operations. 
D. not prevail, if Landco used reasonable care to hire a competent contractor. 
Answer: