Carol rogers, a local millionaire, promises to donate $500,000 to the springfield humane society, which the society plans to use to build a new animal hospital. based on carol's promise, the society begins work on the hospital. carol then backs out of her offer.
a. carol has violated the terms of a contract
b. nothing can be done. carol's donation was a gift. promised gifts do not have to be delivered
c. carol can be sued for the money under theory of promissory estoppel
d. carol will suffer from a bad conscience, but not form any lawsui