All of the Following Are Considered Exceptions to the General

All of the following are considered exceptions to the general rule that there is no duty to rescue except:

A) Contract - lifeguards,for example,have signed contracts agreeing to rescue people in exchange for pay and benefits.
B) Witnessing an accident - this creates a duty to step in and help the injured
C) Child abuse- statutes in nearly all states require that one report suspected child abuse.
D) Endangerment - if one puts another in danger,then he/she is obligated to rescue that person.