A body of mass 10 kg is initially stationary on a $$45^\circ$$ inclined plane as shown in figure. The coefficient of dynamic friction between the body and the plane is 0.3. The body slides down the plane and attains a velocity of 20 m/s. The distance travelled (in metre) by the body along the plane is close to

A

4.8

B

-9.8

C

-4.8

D

9.8