This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Medicine
[{'content': 'Unilateral diaphragmatic paralysis cause \nSelect and explain. \nA. No change is total Lung capacity, B. Increase in forced vital capacity, C. Decrease in inspiratory reserve volume, D. No change in maximum breathing capacity', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Hemi\xa0diaphrogm palsy results in :\xa0\n\n↓ TLC\n↓ FVC\n↓ IRV\n↓ Normal FEV1 and FRC', 'role': 'assistant'}]