Rodney parks his car at Car Stack Parking Lot, Inc. On the back of the parking stub provided to Rodney, there's a statement typed in large letters: "NOT RESPONSIBLE FOR DAMAGE TO CARS." When Rodney returns, his car has been dented by the Car Stack attendant, who was attempting to park more cars on the lot. According to law, the statement on the stub is an exculpatory agreement that's

A. enforceable against Rodney only if he had the opportunity to park elsewhere.
B. not enforceable against Rodney because it's contrary to public policy.
C. not enforceable against Rodney because he instructed the attendant to be careful around his car.

D. enforceable against Rodney regardless of circumstances.