The $v-t$ graphs of two moving objects make angles of $30^{\circ}$ and $45^{\circ}$ with the time axis. Find the ratio of their accelerations.

  • A
    $1 : \sqrt{3}$
  • B
    $\sqrt{3} : 1$
  • C
    $1 : 1$
  • D
    $1 : 3$

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