There are $n$ elastic balls placed on a smooth horizontal plane. The masses of the balls are $m, \frac{m}{2}, \frac{m}{2^2}, \ldots, \frac{m}{2^{n-1}}$ respectively. If the first ball hits the second ball with velocity $v_0$, then the velocity of the $n^{\text{th}}$ ball will be,

  • A
    $\frac{4}{3} v_0$
  • B
    $\left(\frac{4}{3}\right)^n v_0$
  • C
    $\left(\frac{4}{3}\right)^{n-1} v_0$
  • D
    $v_0$

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