Group I contains representative stress-strain curves as shown in the figure, while Group II gives the list of materials. Match the stress-strain curves with the corresponding materials.

$\begin{array}{llll} {} & \text{Group I} & {} & \text{Group II} \\ P. & \text{Curve J} & 1. & \text{Cement paste} \\ Q. & \text{Curve K} & 2. & \text{Coarse aggregate} \\ R. & \text{Curve L} & 3. & \text{Concrete} \end{array}$

1. $P-1; \: Q – 3; \: R-2$
2. $P-2; \: Q – 3; \: R-1$
3. $P-3; \: Q – 1; \: R-2$
4. $P-3; \: Q – 2; \: R-1$