Three capacitors \( C_1 = 2\,\mu \text{F} \), \( C_2 = 6\,\mu \text{F} \) and \( C_3 = 12\,\mu \text{F} \) are connected as shown in figure. Find the ratio of the charge on capacitors \( C_1 \), \( C_2 \) and \( C_3 \) respectively:
\( 1 : 2 : 2 \)
\( 3 : 4 : 4 \)
\( 2 : 1 : 1 \)
\( 2 : 3 : 3 \)
