Match the following for a drilling system.
| Component | Function |
|---|---|
| P. Drill | 1. Utilization of energy in fragmenting rock |
| Q. Drill rod | 2. Reduction of energy loss due to regrinding |
| R. Drill bit | 3. Conversion of original form of energy into mechanical energy |
| S. Flushing medium | 4. Transmission of energy from prime mover to applicator |
P-3,Q-1,R-2,S-4
P-4,Q-1,R-3,S-2
P-3,Q-4,R-1,S-2
P-2,Q-1,R-3,S-4
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