Two identical capacitors, have the same capacitance C. One of them is charged to potential `V_1` and the other `V_2`. The negative ends of the capacitors are connected together. When the positive ends are also connected, the decrease in energy of the combined system is

Options

A. `(1)/(4)C(V_(1)^(2)-V_(2)^(2))`
B. `(1)/(4)C((V_(1)^(2)+V)/(2)^(2))`
C. `(1)/(4)C(V_(1)^(2)+V_(2)^(2))`
D. `(1)/(4)C(V_(1)+V_(2))^(2)`

Answer

D