Sally Has Just Purchased a Home and Wants to Have

Sally has just purchased a home and wants to have an in-ground pool installed. She calls Cool Pools, the company that put in her neighbors' pools. When the company rep comes to her property, he does some soil tests that are standard for the industry and gets the same results as he got when the other pools were put in, so the company gives her a price quote of $16,000. When Cool Pools begin excavating, it discovers solid rock 4 feet below ground level. The neighbors had no such rock. Cool Pools stops work and informs Sally that it will have to use explosives to remove the rock and the cost of the pool will now be $32,000.

A) Sally is under contract and will have to pay the new price.
B) Sally can have the contract discharged based on impracticability.
C) Sally can have the contract discharged based on impossibility.
D) Sally can have the contract discharged based on frustration of purpose.