Which of the Following Statements Concerning Helping in Emergency Situations

Which of the following statements concerning helping in emergency situations is true?

A) If a person is determined to commit suicide there is not much bystanders can do.
B) Due to the many factors that influence helping, students who hear lectures on the bystander effect are no more likely to offer help in an emergency than those who don't.
C) Being aware of the barriers to help can increase helping.
D) In the age of cell phones it is usually safe to assume that someone has already called authorities for help.
E) Helping behaviours can never be predicted.