A parallel-plate capacitor is charged, and then it is disconnected from the battery without any loss of charge. When the plate separation of the capacitor is halved, which of the following is true? Select one: O a. Capacitance increases, electric field decreases. O b. Capacitance decreases, electric field decreases. O c. There will be no change at all. O d. Capacitance decreases, energy increases. O e. Capacitance increases, energy decreases.

A parallel-plate capacitor is charged, and then it is disconnected from the battery without any loss of charge. When the plate separation of the capacitor is halved, which of the following is true? Select one: O a. Capacitance increases, electric field decreases. O b. Capacitance decreases, electric field decreases. O c. There will be no change at all. O d. Capacitance decreases, energy increases. O e. Capacitance increases, energy decreases.