Consider two identical insulated metal spheres, A and B. Sphere A initially has a charge of -6.0 units and sphere B initially has charge of -2.0 units. The sphere are brought in contact with each other for a short time and then separated again. What is the charge on each sphere afterward?
Sphere A: -6.0 units, sphere B: -2.0
Sphere A: -2.0 units, sphere B: -6.0
Sphere A: -8.0, sphere B:-8.0 units
Sphere A: -4.0, sphere B: -4.0