Polymers

\(\text { Match the following : }\)

$$ \begin{array}{llrl} \hline & \text { List-I (Use) } & & \text { List-II (Substance) } \\ \hline \text { A. } & \text { Electrodes in batteries } & \text { I. } & \text { Polypropylene } \\ \hline \text { B. } & \text { Welding of metals } & \text { II. } & \text { Polyacetylene } \\ \hline \text { C. } & \text { Toys } & \text { III. } & \text { Oxyacetylene } \\ \hline \end{array} $$

The correct answer is