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: Pathology
[{'content': 'PTH like substance is produced by which type of lung malignacy - \nSelect and explain. \nA. Squamous cell carcinoma, B. Oat cell carcinoma, C. Adeno carcinoma, D. Large cell carcinoma', 'role': 'user'}, {'content': 'Answer: A \nExplanation: ACTH & ADH →\xa0Small cell carcinoma (predominantly)\nPTH \xa0 \xa0 \xa0 \xa0 \xa0 \xa0 \xa0 →\xa0Squamous cell Ca', 'role': 'assistant'}]