What is the escape velocity of a planet having mass 6 times and radius 2 times as that of Earth?

Q. What is the escape velocity of a planet having mass 6 times and radius 2 times as that of earth?
Answer: [C] √3 ve
Notes: Escape velocity of a satellite is given by ve = (2GM/r)1/2 So when M=6times and R=2R, then ve becomes √3 ve.