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': 'Reid index, False is \nSelect and explain. \nA. Normal value is <0.4, B. Reid index is increased in chronic Bronchitis., C. Measures hypertrophy of mucosal Epithelium., D. Daily sputum production can be correlated with Reid index.', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Reid index measures hypertrophy of the mucus secreting glands.', 'role': 'assistant'}]