Ball $P$ of mass $m$ moving with velocity $\text{'}v\text{'}$ collides with another ball $Q$ of mass $2 \mathrm{m},$ at rest. If $v_P$ and $v_Q$ are the final velocities of $P$ and $Q$ respectively, after collision, then
(Assume the coefficient of restitution is $1/3$)

• Correct answer
  A

  $\frac{v_Q}{v_P}=4$
• B

  $\frac{v_P}{v_Q}=4$
• C

  $\frac{v_Q}{v_P}=2$
• D

  $\frac{v_P}{v_Q}=2$

Hence, the correct answer is option: 'A'.