Match the following items of List-I with those in List-II and choose the correct option
\begin{array}{|l|l|}
\hline \multicolumn{1}{|c|}{ List-I } & \multicolumn{1}{|c|}{ List-II } \\
\hline a) \left[\mathrm{S}_2 \mathrm{O}_3\right]^{2-} & I. Paramagnetic \\
\hline b) \mathrm{H}_2 \mathrm{O}_2 & II. Toxic gas \\
\hline c) \mathrm{H}_2 \mathrm{~S} & III. Strong reducing agent \\
\hline d) \mathrm{S}_2 & IV. Disproportionate in presence of \mathrm{Mn}^{2+} \\
\hline
\end{array}

1. A \((\mathrm{a} \rightarrow \mathrm{IV}),(\mathrm{b} \rightarrow \mathrm{II}),(\mathrm{c} \rightarrow \mathrm{I}),(\mathrm{d} \rightarrow \mathrm{III})\)
2. B \((\mathrm{a} \rightarrow \mathrm{I}),(\mathrm{b} \rightarrow \mathrm{III}),(\mathrm{c} \rightarrow \mathrm{IV}),(\mathrm{d} \rightarrow \mathrm{II})\)
3. C \((\mathrm{a} \rightarrow \mathrm{III}),(\mathrm{b} \rightarrow \mathrm{I}),(\mathrm{c} \rightarrow \mathrm{II}),(\mathrm{d} \rightarrow \mathrm{IV})\)
4. D \((\mathrm{a} \rightarrow \mathrm{III}),(\mathrm{b} \rightarrow \mathrm{IV}),(\mathrm{c} \rightarrow \mathrm{II}),(\mathrm{d} \rightarrow \mathrm{I})\)