The combination that correctly matches the polymer in Group-$1$ with the polymerization reaction type in Group-$2$ is $$\begin{array}{lclc}\ &\text{Group-1} & &\text{Group-2} \\ \text{P.}&\text{Nylon 6} & \text {I.}&\text{Condensation polymerization} \\ \text{Q.}& \text{Polypropylene} & \text{II.}&\text{Ring opening polymerization} \\ \text{R.}& \text{Polyester} & \text{III.}& \text{Addition polymerization } \\ \\ \end{array}$$

1. $\text{P-II}, \text{Q-I}, \text{R-III}$
2. $\text{P-I}, \text{Q-III}, \text{R-II}$
3. $\text{P-III}, \text{Q-II}, \text{R-I}$
4. $\text{P-II}, \text{Q-III}, \text{R-I}$