4. Please explain thoroughly. Thanks!

A parallel plate capacitor is connected to a battery that maintains a constant potential difference between the plates. If the plates are pulled away from each other, increasing their separation, what happens to the amount of charge on the plates? O Nothing happens; the amount of charge stays the same. 0 The amount of the charge increases, because the capacitance increases. O The amount of the charge decreases, because the capacitance increases. O The amount of the charge decreases, because the capacitance decreases. O The amount of the charge increases, because the capacitance decreases