Read the following statements:
- While designing a shallow footing in sandy soil, monsoon season is considered for critical design in terms of bearing capacity.
- For slope stability of an earthen dam, sudden drawdown is never a critical condition.
- In a sandy sea beach, quicksand condition can arise only if the critical hydraulic gradient exceeds the existing hydraulic gradient.
- The active earth thrust on a rigid retaining wall supporting homogeneous cohesionless backfill will reduce with the lowering of water table in the backfill.
Which one of the following combinations is correct?
- $\text{(P)-True, (Q)-False, (R)-False, (S)-False}$
- $\text{(P)-False, (Q)-True, (R)-True, (S)-True}$
- $\text{(P)-True, (Q)-False, (R)-True, (S)-True}$
- $\text{(P)-False, (Q)-True, (R)-False, (S)-False}$