The spring block system lies on a smooth horizontal surface. The free end of the spring is being pulled towards right with constant speed `v_(0) = 2m//s`. At `t = 0 sec`, the spring of constant `k = 100 N//cm` is unstretched and the block has a speed `1 m//s` to left. The maximum extension of the spring is.
.

Options

A. 2 cm
B. 4 cm
C. 6 cm
D. 8 cm

Answer

C