The escape velocity of a body on an imaginary planet which is thrice the radius of the earth and double the mass of the earth is (`v_(e)` is the escape velocity of earth)
A. `sqrt(2//3) v_(e)`
B. `sqrt(3//2) v_(e)`
C. `sqrt(2)//3 v_(e)`
D. `2//sqrt(3) v_(e)`
