You rub a thick piece of styrofoam (an insulator) with fur to build a charge on the styrofoam. The charge is distributed evenly across the surface of the styrofoam. Then, you touch part of the styrofoam with your hand and then you take your hand away.
What is the charge of the styrofoam where you touched it?

a. It is charged.
b. It is uncharged.