A wooden block performs SHM on a frictionless surface with frequency, $$v_0$$. The block carries a charge +Q on its surface. If now a uniform electric field $$\overrightarrow{E}$$ is switched-on as shown, then the SHM of the block will be

A

of the same frequency and with shifted mean position.

B

of the same frequency and with the same mean position.

C

of changed frequency and with shifted mean position.

D

of changed frequency and with the same mean position.