Which of the Following Statements with Regard to the Tort

Which of the following statements with regard to the tort of negligence is false?

A) If a person is injured by a defective product that he himself did not purchase, he can sue the manufacturer for negligence.
B) The test used to determine whether a duty of care is owed is this: would a reasonable person foresee that the plaintiff could be affected by the acts of the defendant?
C) If physical injury can be foreseen as the result of a person's negligence, the wrongdoer will be liable for all the injury suffered although the person injured was unusually weak and infirm.
D) If the court finds contributory negligence, the defendant has no liability at all.
E) A possible defence to the plaintiff's claim of negligence is that the plaintiff volunteered to take the risk.