When an object is placed between two plane mirrors facing each other inclined at an angle `'theta'` , then the number of images (n) formed is given by

Options

A. `[(frac(360^@)(theta)-1]` if `(frac(360^@)(theta))` is even.
B. `[(frac(360^@)(theta)-1]` if `(frac(360^@)(theta))` is odd and object is asymmetrical.
C. `[frac(360^@)(theta)]` for all the positions of object.
D. `[(frac(360^@)(theta))+ 1]` for all the positions of object.