A capacitor C is fully charged with voltage V0. After disconnecting the voltage source, it is connected in parallel with another uncharged capacitor of capacitance C/2. The energy loss in the process after the charge is distributed between the two capacitors is
(1) (1/4)CV20
(2) (1/3)CV20
(3) (1/6)CV20
(4) (1/2)CV20