Electric circuit

The above diagram is a circuit that consists of a power supply of voltage VV and two capacitors A and B with capacitances CC and 2C2C, respectively. Suppose that the switch S1S_1 is closed and the switch S2S_2 is open, and sufficient time passes until the quantity of the electric charge on the capacitor A becomes Q.Q. In this state, we open the switch S1S_1 and close the switch S2S_2 and let sufficient time pass. Then what will be the ratio of the quantities of the electric charges on the capacitors A and B, i.e. QA:QB?Q_A:Q_B?

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