A body is projected from a point on ground. If just crosses a wall of height 20 m at a distance 20 m from the point of projection. If the body strikes the ground at a distance of 60 m, from the wall, the angle of projection is $\left[\tan {37}^o=\raisebox{1ex}{$3$}\!\left/ \!\raisebox{-1ex}{$4$}\right.\right]$

• A

  ${\tan }^{-1}\left(\frac{2}{3}\right)$

• B

  ${45}^o$

• C

  ${53}^o$

• D

  ${37}^o$