Planet a Has Twice the Mass of Planet B

Multiple Choice

Planet A has twice the mass of planet B.Experiments determine that a bowling ball on planet A weighs eight times as much as it does on planet B.Relative to the radius of planet B,what is the radius of planet A?

A) Planet A has four times the radius of planet B.
B) Planet A has twice the radius of planet B.
C) Planet A has the same radius as planet B.
D) Planet A has half the radius of planet B.