Which of the following statements with regard to the tort of negligence is false? A possible defence to the plaintiff's claim of legligence is that the plaintiff volunteered to take the risk, $-$ If a person is injured by a defective product that they themselves did not purchase, they can sue the manufacturer for negligence, $-$ If the court finds contributory negligence $,$ the defendant has no liability at all, $-$ If physical injury can be foreseen as the result of a persons negligence, the worngdoer will beiable for ll the injury suffered although the person injured was unusually weak and infirm, $-$ test used to determine a duty of care is owed is this : wa reasonable person forsee that the plaintiff could be affected by the acts of the defendant $?$