need explanation also

3. Read carefully and select all the statements that are correct. You don't need to explain. (a) A capacitor with capacitance C is charged to a potential difference Vo using a battery. The battery is then removed and the capacitor is connected in parallel to an uncharged capacitor with the same capacitance C. The new potential differences of the capacitors are the same and equal to AVo/2. (b) The final amount of charge on each of the two capacitors in (a) is q = CAVo. (c) The initial potential energy stored in the first capacitor in (a), U = =C(AVo), is exactly the same as the total amount of final potential energies stored in the two capacitors. (d) Inserting a dielectric in the second capacitor in (a) while it is connected to the first capacitor changes the charge distribution on the two capacitors