In an elastic collision between spheres A and B of equal mass but unequal radii, A moves along the x-axis and B is stationary before impact. Which of the following is possible after impact ?

Options

A. A comes to rest
B. The velocity of B relative to A remains the same in magnitude but reverse in direction
C. A and B move with equal speeds, making an angle of `45^(@)` each with the x-axis
D. A and B move with unequal speeds, making angle of `30^(@)` and `60^(@)` with the x-axis respectively