Which of these is an example of Newton’s first law of motion?

A. A basketball bounces on the ground with the same force that the ground pushes up on the ball.

B. A person standing on a bus moves backward when the bus suddenly moves forward.

C. A person jumps to a dock from a boat, and the boat moves away from the dock.

D. A baseball hit with a baseball bat travels faster than a bowling ball hit with the same force