A body is projected horizontally from a height of 78.4 m with a velocity 10 ms^-1. Its velocity after 3 seconds is?  [g = 10 ms^-2] (Take direction of projection on $\hat{\mathrm{i}}$ and vertically upward direction on $\hat{\mathrm{j}}$ ).

• A

  

• B

  

• C

  

• D