A block is sliding down on an inclined plane of slope $\theta$ and at an instant $t = 0$ this block is given an upward momentum so that it starts moving up on the inclined surface with velocity $u$. The distance $(S)$ travelled by the block before its velocity become zero, is . . . . . . . . . . .
($g =$ gravitational acceleration)

• A
  $\frac{u^2}{4g \sin \theta}$
• B
  $\frac{2u^2}{g \cos \theta}$
• C
  $\frac{u^2}{\sqrt{2}g \cos \theta}$
• D
  $\frac{u^2}{2g \cos \theta}$