If a Dielectric Is Inserted Between the Plates of a Parallel-Plate

If a dielectric is inserted between the plates of a parallel-plate capacitor that is connected to a 100-V battery, the

A) voltage across the capacitor will decrease.
B) electric field between the plates will decrease.
C) electric field between the plates will increase.
D) charge on the capacitor plates will decrease.
E) charge on the capacitor plates will increase.