A simple pendulum performs simple harmonic motion about x = 0 with an amplitude a and time period T. The speed of the pendulum at $x=a/2$will be :

Question

( A ) $\frac{\pi a\sqrt3}{2T}$
( B ) $\frac{3\pi^2 a}{T}$
( C ) $\frac{\pi a}{T}$
( D ) $\frac{\pi a\sqrt3}{T}$