Sphere A is a small solid metal sphere carrying a charge of +12μC. Sphere B is a solid plastic sphere of the same size that is electrically neutral. The two spheres are briefly touched together and then separated. Neglect any external influences.
After separation, the net charge on each sphere is most nearly
a) A: +6μCB: +6μC
b) A: +8μCB: +4μC
c) A: +12μCB: 0μC
d) A: 0μCB: +12μC