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': 'A patient presents with decreased vital capacity and total lung volume. What is the most probable \nSelect and explain. \nA. Bronchiectasis, B. Sarcoidosis, C. Cystic fibrosis, D. Asthma', 'role': 'user'}, {'content': 'Answer: B \nExplanation: None', 'role': 'assistant'}]