A polariod (I) is placed in front of a monochromatic source. Another polariod (II) is placed in front of this polariod (I) and rotated till no light passes. A third polariod (III) is now placed in between (I) and (II), then
A. when axis of (I) and (III) are parallel then no light emers out of (II)
B. when axis of (II) and (III) are parallel then no light emerges out of (II)
C. When axis of (I), (III) and (II) are non-parallel then light emerges out of (III)
D. For any position of (III) no light emergens out of (II)