A ball is projected from point $$O$$ on the ground with a certain velocity $$u$$ at angle $$\theta$$ from horizontal. When it reaches point $$P$$ located at a horizontal distance $$L$$ from $$O$$ and is at a height $$h$$ above the ground, the angle $$\alpha$$ subtended by the velocity vector $$v$$ with horizontal at this point $$P$$ is expressed as

A

$$\tan\alpha=\frac{h}{L}-\tan\theta$$

B

$$\tan\alpha=\frac{2h}{L}+\tan\theta$$

C

$$\tan\alpha=\tan\theta-\frac{2h}{L}$$

D

$$\tan\alpha=\frac{2h}{L}-\tan\theta$$