A particle is thrown into air with a velocity u by making an angle $\mathrm{\theta }$ with horizontal. Then the velocity of the projectile at the highest point is

• A

  zero

• B

  $\mathrm{ucos}\mathrm{\theta }$

• C

  $\mathrm{usin}\mathrm{\theta }$

• D

  $\text{ either zero (or) ucos }\mathrm{\theta }$