While Sailboarding, Jolene Is Injured When Kirby Carelessly Crosses Her

Multiple Choice

While sailboarding, Jolene is injured when Kirby carelessly crosses her path. Kirby's insurance company offers Jolene $50,000 to release Kirby from liability, and she accepts. Later, Jolene 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 Kirby has a preexisting duty to pay.
D) ​unenforceable because the release is an illusory promise.