Earth Exerts a Gravitational Force on the Moon, Keeping It

Multiple Choice

Earth exerts a gravitational force on the Moon, keeping it in its orbit.The reaction to this force, in the sense of Newton's third law, is:

A) the centripetal force on the Moon
B) the nearly circular orbit of the Moon
C) the gravitational force exerted on Earth by the Moon
D) the tides due to the Moon
E) the apple hitting Newton on the head