This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: All India exam, Subject name: Pharmacology
[{'content': 'Most common cause of central precocious pubey in girls is? NOT RELATED-MEDICINE \nSelect and explain. \nA. Idiopathic, B. McCune-Albright syndrome, C. Hypothyroidism, D. Granulosa-theca cell tumour', 'role': 'user'}, {'content': 'Answer: A \nExplanation: .', 'role': 'assistant'}]