Question

A capacitor is connected to a battery for a long time, so it is fully charged. The battery is then disconnected from the capacitor. Then, a conducting wire is used to connect the two plates of the capacitor. Which of the following will happen?
A. The charges on the two plates will annihilate each other, and the voltage will become zero.
B. The charges on the two plates will remain unchanged, but the voltage will become zero.
C. The charges on the two plates will become zero, but the voltage will remain unchanged.
D. Both the charges and the voltage will remain unchanged.