Ler l be the moment of inertia of a uniform square plate about an axis AB that passes through its centre and is parallel to two of its sides. CD is a line in the plane of the plate that passes through the centre of the plate and makes an angle `theta` with AB. The moment of inertia of the plate about the axis CD is then equal to
A. `I`
B. `I cos^(2)theta`
C. `I sin^(2)theta`
D. `I cos^(2)(theta//2)`