A particle moves such that its acceleration a is given by $\mathrm{a}=-\mathrm{bx}$ , where x is the displacement from equilibrium position and b is a constant. The period of oscillation is

• A

  $2\mathrm{\pi }\sqrt{\mathrm{b}}$

• B

  $\frac{2\mathrm{\pi }}{\sqrt{\mathrm{b}}}$

• C

  $\frac{2\mathrm{\pi }}{\mathrm{b}}$

• D

  $2\sqrt{\frac{\mathrm{\pi }}{\mathrm{b}}}$