[V_(c)" and "V_(p)" denote the escape velocities from the earth and another planet having "],[" twice the radius and the same mean density as the earth,then "]

v_(e) and v_(p) denotes the escape velocity from the earth and another planet having twice the radius and the same mean density as the earth. Then

v_(e) and v_(p) denotes the escape velocity from the earth and another planet having twice the radius and the same mean density as the earth. Then

v_(e) "and" v_(p) denotes the escape velocity from the earth and another planet having twice the radius and the same mean density as the earth. Then which of the following is (are) wrong ?