A ground to ground projectile is at point $A$ at $t=\frac{T}{3}$, is at point $B$ at $t=\frac{5 T}{6}$ and reaches the ground at $t=T$. The difference in heights between points $A$ and $B$ is

  • A

    $\frac{g T^2}{6}$

  • B

    $\frac{g T^2}{12}$

  • C

    $\frac{g T^2}{18}$

  • D

    $\frac{g T^2}{24}$

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