Shear stress at y distance above neutral axis (NA) on a prismatic beam dueto shear force V is given by

A

$$VA \frac{\overline{y}}{Ib}$$

B

$$\frac{VI}{(bA\overline{y})}$$

C

$$VA \overline{y} \frac{b}{I}$$

D

$$\frac{Vb}{(A \overline{y}I)}$$