Four identical thin, square metal sheets, $S_1, S_2, S_3$, and $S_4$, each of side a are kept parallel to each other with equal distance $d(\ll a)$ between them, as shown in the figure. Let $C_0=\varepsilon_0 a^2 / d$, where $\varepsilon_0$ is the permittivity of free space. Match the quantities mentioned in List-I with their values in List-II and choose the correct option.