If You Wish to Lose Weight,you May Rub a Balloon

If you wish to lose weight,you may rub a balloon on your head.If you charge the balloon to a charge of q = -1.23µC,how much weight did you lose? The mass of an electron is 9.11 *10^-31 kg.

A) 7.27 * 10^-24 N
B) 6.87 * 10^-17 N
C) 7.54 * 10^-16 N
D) 1.21 * 10^-15 N
E) 1.28 * 10^-12 N