Based on drained triaxial shear tests on sands and clays, the representative variations of volumetric strain $\left ( \Delta V/V \right )$ with the shear strain $\left ( \gamma \right )$ is shown in the figure.

Choose the $\text{CORRECT}$ option regarding the representative behaviour exhibited by Curve $P$ and Curve $Q$.

1. Curve $P$ represents dense sand and overconsolidated clay, while Curve $Q$ represents loose sand and normally consolidated clay
2. Curve $P$ represents dense sand and normally consolidated clay, while Curve $Q$ represents loose sand and overconsolidated clay
3. Curve $P$ represents loose sand and overconsolidated clay, while Curve $Q$ represents dense sand and normally consolidated clay
4. Curve $P$ represents loose sand and normally consolidated clay, while Curve $Q$ represents dense sand and overconsolidated clay