Ball 1 collides with an another identical ball 2 at rest For what values of coefficient of restitution e the velocity of 2nd ball becomes two times of ball 1 after collision?

Question

$$(a)\;\frac{1}{3} \quad (b)\;\frac{1}{2} \quad (c)\;\frac{1}{4} \quad (d)\;\frac{1}{6}$$