A uniform simply supported beam of span (l) carries a point load (W) at the Centre. The downward deflection at the centre will be

A

$$\frac{Wl^{2}}{8EI}$$

B

$$\frac{Wl^{3}}{8EI}$$

C

$$5 \frac{Wl^{2}}{384EI}$$

D

$$ \frac{Wl^{3}}{48EI}$$