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': 'The tumour marker for Granulosa cell tumour is: \nSelect and explain. \nA. Inhibin, B. CA 19-9, C. CA 15-3, D. CA 125', 'role': 'user'}, {'content': 'Answer: A \nExplanation: . Inhibin', 'role': 'assistant'}]