A two-member truss $PQR$ is supporting a load $W$. The axial forces in members $PQ$ and $QR$ are respectively

- $2W$ tensile and $\sqrt{3}W$ compressive
- $\sqrt{3}W$ tensile and $2W$ compressive
- $\sqrt{3}W$ compressive and $2W$ tensile
- $2W$ compressive and $\sqrt{3}W$ tensile