A particle of mass $$m$$ and charge $$-q$$ moves along a diameter of a uniform spherical charge distribution of radius $$R$$ with total charge $$+Q$$. The angular frequency of the periodic motion performed by the particle is

A

$$\sqrt{\frac{2\pi}{\varepsilon_0}\frac{qQ}{mR^3}}$$

B

$$\sqrt{\frac{1}{2\pi\varepsilon_0}\frac{qQ}{mR^3}}$$

C

$$\sqrt{\frac{1}{\varepsilon_0}\frac{qQ}{mr^3}}$$

D

$$\sqrt{\frac{1}{4\pi\varepsilon_0}\frac{qQ}{mR^3}}$$