Which of the Following Is a Doctrine Available to Defendants

Multiple Choice

Which of the following is a doctrine available to defendants whereby a defendant may avoid liability by establishing that the plaintiff voluntarily and unreasonably encountered the risk of the actual harm that the defendant caused?

A) Last-clear-chance doctrine.
B) Assumption of the risk doctrine.
C) Contributory negligence doctrine.
D) Res ipsa loquitur.
E) Negligence per se.