Medicine In moderate severity obstructive lung disease, the expected abnormalities include the following except- A (upward arrow) Residual capacity B (downward arrow) Vital capacity C (downward arrow)FRC/TLC ratio D FEV1/ IFVC<70% 💡 Explanation In moderate severity obstructive lung disease, the expected abnormalities include the following except- ✓ Correct Answer: C. (downward arrow)FRC/TLC ratio