As shown in the figure, a block of mass m is suspended from a support with the help of a system of identical springs. The force constant of each spring is k. Therefore, the frequency of oscillations of the block is

A

$$\frac{1}{2\pi}\sqrt{\frac{3k}{2m}}$$

B

$$\frac{1}{2\pi}\sqrt{\frac{2k}{3m}}$$

C

$$\frac{1}{2\pi}\sqrt{\frac{5k}{6m}}$$

D

$$\frac{1}{2\pi}\sqrt{\frac{6k}{5m}}$$