With no explanation, chose the best option from "A" or "B". Robert sees a stranger choking on food at a restaurant and is considering using the heimlich maneuver on him. Robert wants to decide if he wants to help the stranger out or not.

A: Robert sits back and waits for someone else to use the heimlich maneuver on the stranger.
B: Robert quickly moves to the stranger and uses the heimlich maneuver to save the stranger.
B.