An arrangement of spring , strings, pulley and masses is shown in the figure . the pulley and the String are massless and `Mgtm` . the spring is light with spring constant `k`. If the string Connecting `m` to the ground detached , then immediately after detachment

Options

A. the magnitude of te acceleration of is zero and of `M` is
B. the magnitude of the acceleration of `m` is `(M-m) g//m` and that of `M` is zero
C. the accelerations of both masses are same
D. the elongation in the spring is (`M-m) g//k`

Answer

B