Assertion (A): A decrease in pH shifts the oxygen dissociation curve to the right. Reason (R): Lower pH (more acidic conditions) indicates higher CO₂ concentration, which reduces hemoglobin's affinity for oxygen.
- 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: A
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