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': 'Hypercalcemia occurs in which type of lung cancer? \nSelect and explain. \nA. Oat cell, B. Giant cell, C. Squamous cell, D. Alveolar cell', 'role': 'user'}, {'content': 'Answer: C \nExplanation: None', 'role': 'assistant'}]