The piston of an engine moves with simple harmonic motion. The crank rotates at 120 r.p.m with a stroke of 2 meters. The velocity of the piston, when it is at a distance of 0.8 metre from the center is.

A

$$4.8 \pi$$

B

$$2.4 \pi$$

C

$$1.2 \pi$$

D

$$0.6$$