The moment of inertia of a uniform rectangular plate about an axis passing through its midpoint and parallel to its length l is

Question

$$\begin {array} {1 1} (a)\;\frac{Mb^2}{4} & \quad (b)\;\frac{Mb^2}{6} \\ (c)\;\frac{Mb^2}{12} & \quad  (d)\;\frac{Ml^2}{12} \end {array}$$