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': '↑Ca2+ in Ca lung is seen in Ca – \nSelect and explain. \nA. Adeno, B. Squamous, C. Small cell, D. Large cell', 'role': 'user'}, {'content': 'Answer: B \nExplanation: None', 'role': 'assistant'}]