The expression for the equivalent capacitance of the system shown in Fig. 2(CF).9 is ( \( A \) i...

The expression for the equivalent capacitance of the system shown in Fig. 2(CF).9 is ( \( A \) is the crosssectional area of one of the plates):
(a) \( \varepsilon_{0} A / 3 d \)
(b) \( \frac{3 \varepsilon_{0} A}{d} \)
(c) \( \varepsilon_{0} A / 6 d \)
(d) none of these