This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Disorders of Pubey, Subject name: Pediatrics
[{'content': 'Most common cause of central precocious pubey in girls: \nSelect and explain. \nA. Exogenous estrogen, B. Idiopathic, C. CNS tumor, D. Hypothyroidism', 'role': 'user'}, {'content': 'Answer: B \nExplanation: - MCC of central precocious pubey in girls is Idiopathic. - Organic causes are more common in boys. - OTHER CAUSES: Infections - TB, meningitis Injuries - Trauma, neurosurgery, Radiotherapy Tumors - Hypothalamic hamaoma (Gelastic seizures)- MCC of organic central precocious pubey CNS malformations like arachnoid cyst ,hydrocephalus, septo-optic dysplasia', 'role': 'assistant'}]