A block of mass m is placed on a smooth inclined wedge ABC of inclination $$\theta$$ as shown in the figure. The wedge is given an acceleration ‘a towards the right. The relation between a and $$\theta$$ for the block to remain stationary on the wedge is

A

$$a=g \tan \theta$$

B

$$a=g \cos \theta$$

C

$$a=\frac{g}{\sin \theta}$$

D

$$a=\frac{g}{\cosec \theta}$$