Assertion (A): Assertion (A): Residual volume (RV) is the volume of air remaining in the lungs even after a forceful expiration. Reason (R): Reason (R): Residual volume can be measured directly using a spirometer.
- ABoth A and R are true and R is the correct explanation of A
- BBoth A and R are true but R is NOT the correct explanation of A
- CA is true but R is false
- DA is false but R is true
✓ Correct answer: C
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