Match the following and choose the correct code.
\begin{array}{llll}
\hline & Material & & Application \\
\hline (A) & Silicones & (i) & As a catalyst \\
\hline & & (ii) & Greases \\
\hline (B) & Zeolites & (iii) & In surgical implants \\
\hline & & (iv) & As ion exchangers \\
\hline
\end{array}

1. A \(\begin{array}{cccc}\text { A } & \text { A } & \text { B } & \text { B } \\ \text { (ii) } & \text { (iii) } & \text { (i) } & \text { (iv) }\end{array}\)
2. B \(\begin{array}{cccc}\text { A } & \text { A } & \text { B } & \text { B } \\ \text { (i) } & \text { (iii) } & \text { (ii) } & \text { (iv) }\end{array}\)
3. C \(\begin{array}{cccc}\text { A } & \text { A } & \text { B } & \text { B } \\ \text { (ii) } & \text { (iv) } & \text { (i) } & \text { (iii) }\end{array}\)
4. D \(\begin{array}{cccc}\text { A } & \text { A } & \text { B } & \text { B } \\ \text { (i) } & \text { (iv) } & \text { (ii) } & \text { (iii) }\end{array}\)