Which of the Following Statements Is True About Assault and Battery

Which of the following statements is true about assault and battery?

A) If the plaintiff is aware that the defendant is incapable of carrying out a threat, it is not an assault.
B) Defense of a third person is permitted even if there is no socially recognized duty to defend that person.
C) A threat to commit harm in a week is considered as an assault.
D) Accidentally bumping into someone on a crowded street is considered a battery.