A block of mass m is attached with massless spring of force constant k. The block is placed over a fixed rough inclined surface for which the coefficient of friction is \[\mu =3/4.\] The block of mass m is initially at rest. The block of mass M is released from rest with spring in unstretched state. The minimum value of M required to move the block up the plane is (neglect mass of string and pulley and friction in pulley.)

• A. \[\frac{3}{5}m\]
• B. \[\frac{4}{5}m\]
• C. \[\frac{6}{5}m\]
• D. \[\frac{3}{2}m\]