Match the following in $\textbf{Column X}$ with $\textbf{Column Y}:$

$\begin{array} {|l|l|} \hline \qquad \qquad \qquad \qquad \qquad \textbf{Column X} & \textbf{Column Y} \\\hline \text{(P) In a triaxial compression test, with increase of axial} & \text{(I) decreases.}\\\text{strain in loose sand under drained shear condition,} & \\ \text{ the volumetric strain} & \\\hline \text{(Q) In a triaxial compression test, with increase of axial } & \text{(II) increases.} \\ \text{strain in loose sand under undrained shear condition,} & \\ \text{the excess pore water pressure} \\\hline \text{(R) In a triaxial compression test, the pore pressure } & \text{(III) remains same.} \\ \text{parameter “B” for a saturated soil} & \\\hline \text{(S) For shallow strip footing in pure saturated clay,} & \text{(IV) is always 0.0.} \\ \text{Terzaghi’s bearing capacity factor } (N_{q}) \text{ due to}& \\ \text{surcharge} & \\\hline & \text{(V) is always 1.0.} \\\hline & \text{(VI)is always 0.5.} \\\hline \end{array}$

Which one of the following combinations is correct?

1. $\text{(P)-(I), (Q)-(II), (R)-(V), (S)-(V)}$
2. $\text{(P)-(II), (Q)-(I), (R)-(IV), (S)-(V)}$
3. $\text{(P)-(I), (Q)-(III), (R)-(VI), (S)-(IV)}$
4. $\text{(P)-(I), (Q)-(II), (R)-(V), (S)-(VI)}$