This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Asthma, Subject name: Medicine
[{'content': 'A Patient with history of shortness of breath has Decreased FEV1/FVC Ratio, Normal DLCO. A 200 ml increase in baseline FEVI is observed 15 minutes after administration of bronchodilators. The likely diagnosis is - \nSelect and explain. \nA. Asthma, B. Chronic Bronchitis, C. Emphysema, D. Interstitial Lung Disease', 'role': 'user'}, {'content': "Answer: A \nExplanation: Ans. is 'a' i.e., Asthma", 'role': 'assistant'}]