Karen Is a Strong Swimmer

Multiple Choice

Karen is a strong swimmer.One afternoon she is having a picnic at a lake and sees a man she does not know drowning.Generally,Karen

A) has a legal duty to rescue the man.
B) has a legal duty to rescue the man,but only if her efforts will not pose a serious threat to her own safety.
C) has a legal duty to rescue the man since,as a strong swimmer,she is treated as a "special class" of persons who must get involved in such situations.
D) has no legal duty to rescue the man.