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 cos theta`
B. `a=g/sintheta`
C. `a= (g)/(cosec theta)`
D. `a=g tan theta`
