Match the following:
$\begin{array}{|l|l|l|l|} \hline P. & \text{Feeler guage} & I. & \text{Radius of an object} \\ \hline Q. & \text{Fillet guage} & II. & \text{Diameter within limits by comparison} \\ \hline R. & \text{Snap guage} & III. & \text{Clearance or gap between components} \\ \hline S. & \text{Cylindrical plug guage} & IV & \text{Inside diameter of straight hole} \\ \hline \end{array}$
- $P–III, Q–I, R–II, S–IV$
- $P–III, Q–II, R–I, S–IV$
- $P–IV, Q–II, R–I, S–III$
- $P–IV, Q–I, R–II, S–III$