A pen of mass 'm' is lying on a piece of paper of mass M placed on a rough table. If the coefficient of friction between the pen and paper, and, the paper and table are `mu_(1)` and `mu_(2)`, respectively, then the minimum horizontal force with which the paper has to be pulled for the pen to start slipping is given by-

Options

A. `(m + M) (mu_(1) + mu_(2))` g
B. `(mmu_(1)+Mmu_(2))`g
C. `{mmu_(1) + (m + M) mu_(2)}` g
D. `m(mu_(1) + mu_(2))` g

Answer

A