A parallel plate capacitor is attached to a battery that supplies a constant potential difference. While the battery is still attached, the parallel plates are separated a little more. Which statement describes what happens?
(a) The electric field increases and the charge on the plates decreases.
(b) The electric field remains constant and the charge on the plates increases.
(c) The electric field remains constant and the charge on the plates decreases.
(d) Both the electric field and the charge on the plates decrease.