A bob of mass M is suspended by a massless string of length L. The horizontal velocity V at position A is just sufficient to make it reach the point B. The angle $$\theta$$ at which the speed of the bob is half of that at A, satisfies 

A

$$\theta = \frac{\pi}{4}$$

B

$$\frac{\pi}{4} < \theta < \frac{\pi}{2}$$

C

$$\frac{\pi}{2} < \theta < \frac{3 \pi}{4}$$

D

$$\frac{3 \pi}{4} < \theta < \pi$$