Match the downstream processes in $\text{Group I}$ with the products in $\text{Group II}$.
$\begin{array}{|C|l|C|l|} \hline& \textbf{Group I} & {} & \textbf{Group II} \\\hline P. &\text{Solvent extraction} & 1. &\text{Lactic acid} \\\hline Q. &\text{Protein-A linked affinity chromatography} & 2. &\text{Penicillin} \\\hline R. &\text{Extractive distillation} & 3. &\text{Monoclonal antibody} \\\hline S. &\text{Salting out} & 4. &\text{Lipase} \\\hline\end{array}$
- $\text{P-2, Q-3, R-1, S-4}$
- $\text{P-4, Q-1, R-2, S-3}$
- $\text{P-4, Q-1, R-3, S-2}$
- $\text{P-2, Q-4, R-1, S-3}$
