Which ONE of the following options CORRECTLY matches the Criteria Air Pollutants with measurement methods used in Continuous Ambient Air Quality Monitoring Stations (CAAQMS) operated by Central Pollution Control Board (CPCB) given in the table?
$$\begin{array}{|ll|ll|}
\hline & \textbf{Criteria Air Pollutants} & & \textbf{Measurement Methods} \\
\hline \text{(P)} & \text{Sulphur Dioxide } (\mathrm{SO}_{2},\ \mu \mathrm{g}/\mathrm{m}^{3}) & (i) & \text{Chemiluminescence} \\
\hline \text{(Q)} & \text{Nitrogen Dioxide } (\mathrm{NO}_{2},\ \mu \mathrm{g}/\mathrm{m}^{3}) & (ii) & \text{Non Dispersive Infra}\\ &&& \text{Red (NDIR) spectroscopy} \\
\hline \text{(R)} & \text{Particulate Matter } (\mathrm{PM}_{2.5},\ \mu \mathrm{g}/\mathrm{m}^{3}) & (iii) & \text{Ultraviolet fluorescence} \\
\hline \text{(S)} & \text{Carbon Monoxide } (\mathrm{CO},\ \mathrm{mg}/\mathrm{m}^{3}) & (iv) & \text{Beta attenuation} \\ \hline \end{array}$$
- $\text{(P) - (i); (Q) - (ii); (R) - (iii); (S) - (iv)}$
- $\text{(P) - (iv); (Q) - (iii); (R) - (ii); (S) - (i)}$
- $\text{(P) - (iii); (Q) - (i); (R) - (iv); (S) - (ii)}$
- $\text{(P) - (ii); (Q) - (iii); (R) - (i); (S) - (iv)}$
