Group I  lists tool/instrument while Group II lists the method of surveying. Match the tool/instrument with the corresponding method of surveying.

$\begin{array}{ll} \text{Group I} & \text{Group II} \\ P. \text{ Alidade} & 1. \text{Chain surveying} \\ Q. \text{ Arrow} & 2. \text{ Levelling} \\ R. \text{ Bubble tube} & 3. \text{Plain table surveying} \\ S. \text{ Stadia hair} & 4. \text{Theodolite surveying} \end{array}$

1. $P-3; Q-2; R-1; S-4$
2. $P-2; Q-4; R-3; S-1$
3. $P-1; Q-2; R-4; S-3$
4. $P-3; Q-1; R-2; S-4$