A projectile is thrown from a point in a horizontal plane such that the horizontal and vertical velocities are 9.8 $m{s}^{-1}$ and 19.6$m{s}^{-1}$ . It will strike the plane after covering distance of 

• A

  39.2 m

• B

  19.6 m

• C

  9.8 m

• D

  4.9 m