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: Gynaecology & Obstetrics
[{'content': 'Which of the following is true regarding precocious pubey : \nSelect and explain. \nA. Sexual maturity is attained early, B. Mental function is increased, C. No reproductive function, D. Body propoions are enlarged', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Precocious pubey is the appearance of appropriate secondary sexual characters before the age of 8 years and occurrence of menstruation before 10 years of chronological age. Also know : Delayed pubey : is considered delayed when the secondary sexual characters do not appear by the age of 14, and menarche is not established by 16 years of age. REF : gynecology book of shaw 17th', 'role': 'assistant'}]