If You Stood on a Planet Having a Mass Four

If you stood on a planet having a mass four times that of Earth's mass,and a radius two times that of Earth's radius,the gravitational force that the planet exerts on you would be

A) the same as Earth exerts on you.
B) two times more than Earth exerts on you.
C) two times less than Earth exerts on you.
D) four times more than Earth exerts on you.