Two spherical planets P and Q have the same uniform density p, masses M_P and M_Q and surface areas A and 4A respectively. A spherical planet R also has uniform density p and its mass is (M_P + M_Q). The escape velocities from the planets P, Q and R are V _p, V _Q and  V _R respectively. Then  

1)  V _Q > V _R > V _p                       2) V _R > V _Q > V _p

3) V _R/ V _p = 3                         4) V p/ V _{Q = $\frac{1}{2}$}