While Sailboarding,Jolene Is Injured When Kilroy Carelessly Crosses Her Path

Multiple Choice

While sailboarding,Jolene is injured when Kilroy carelessly crosses her path.Kilroy's insurance company offers Jolene $50,000 to release Kilroy 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 Jolene's injuries are unforeseeably difficult.
C) unenforceable because Kilroy has a preexisting duty to pay.
D) unenforceable because the release is an illusory promise.