The fundamental natural frequency of the cantilever beam with point load P acting at thefree end, in rad/sec is

A

$$\sqrt{\frac{3 EIg}{PL^3}}$$

B

$$\sqrt{\frac{PL^3}{3EIg}}$$

C

$$\frac{1}{2 \pi}\sqrt{\frac{3EIg}{PL^3}}$$

D

$$\frac{1}{2 \pi}\sqrt{\frac{PL^3}{3EIg}}$$