In the circuit shown the cells are ideal and of equal emfs, the capacitance of the capacitor is `C` and the resistance of the resistor is `R`. `X` is first joined to `Y`and then to `Z`. After a long time, the total heat produced in the resistor will be

Options

A. equal to the energy finally stored in the capacitor.
B. half to the energy finally stored in the capacitor.
C. twice to the energy finally stored in the capacitor.
D. four times the energy finally stored in the capacitor.

Explanation

Charge flow through the battery will be `2CV`, while the energy stored in capacitor will be the same.