Solve this:

Q. Two bodies A and B are charged with equal magnitude of charge but A with positive charge and B with negative. If M_A and M_B are masses before charging and M_A and M_B are the masses after charging, then (mo is some constant mass ).

  (a) M_A = M_A + M_o and M_B = M_B – m_o                               (b) M_A = M_A– M_o and M_B = M_B+ m_o

  (c) M_A = M_A                                                                         (d)  M_A = M_A –  and M_B = M_B + m_o