While Sailboarding, Jolie Is Injured When Kirby Carelessly Crosses Her

Multiple Choice

While sailboarding, Jolie is injured when Kirby carelessly crosses her path. Kirby's insurance company offers Jolie $50,000 to release Kirby from liability, and she accepts. Later, she learns that her injuries are more serious than she realized. The release is

A) enforceable.
B) unenforceable because Jolie's injuries are unforeseeably difficult.
C) unenforceable because Kirby has a preexisting duty to pay.
D) unenforceable because the release is an illusory promise.