Which of the Following Would Be Considered Hearsay

Which of the following would be considered hearsay?

A) A witness testifies that an alleged kidnapper made a ransom demand.
B) A witness testifies that a mechanic told the driver of an automobile (who later was in an accident) that the automobile had worn-out brake pads that needed to be replaced.
C) A witness testifies that a defendant had previously admitted to being intoxicated contrarily to her testimony in court.
D) A witness testifies that a defendant had told the witness he intended to kill his wife.