The circuit shown consists of an ideal battery of electromotive force \(\varepsilon\), three resistors of resistances \(R_1\), \(R_2\), and \(R_3\), an initially uncharged capacitor of capacitance \(C\), and a switch \(S\). At time \(t = 0\), switch \(S\) is closed. After the circuit reaches a steady state, which of the following expressions is equal to the total electric energy stored in the capacitor?