Match the following
$$\begin{array}&&\textbf{Group I} & \textbf{Group II} \\ &\text{P. Tank in series model} & \text{I. Non-isothermal reaction}\\&\text{Q. Liquid-liquid extraction} & \text{II. Mixer-settler} \\
&\text{R. Optimum temperature progression} & \text{III. $PFR$ with axial mixing} \\
&\text{S. Thiele modulus} & \text{IV. Solid catalyzed reaction} \\ \end{array}$$
- P-II, Q-IV, R-I, S-III
- P-I, Q-II, R-III, S-IV
- P-III, Q-I, R-II, S-IV
- P-III, Q-II, R-I, S-IV