The maximum deflection of a simply supported beam of effective span L and subjected to a central concentrated load W is given by

A

$$\frac{W L^{3}}{8}$$ EI

B

$$\frac{W L^{3}}{24}$$ EI

C

$$\frac{W L^{3}}{48}$$ EI

D

5 $$\frac{W L^{3}}{384}$$ EI