\textbf{183.} In the circuit below, all capacitors are identical and the switch is initially open. When the switch is closed, the charge on capacitor $C_5$ becomes equal to what fraction of $C_\Delta$?
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\textit{[Figure: Circuit with capacitors $C_1$, $C_2$, $C_3$, $C_4$, $C_5$, $C_6$ connected with a voltage source $V$ and a switch]}
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$$\text{(1)}\;\frac{11}{12} \qquad \text{(2)}\;\frac{11}{15} \qquad \text{(3)}\;\frac{2}{5} \qquad \text{(4)}\;\frac{3}{10}$$