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: Gynaecology & Obstetrics
Which of the following is true regarding precocious puberty: 
Select and explain. 
A. Sexual maturity is attained early, B. Mental function is increased, C. No reproductive function, D. Body proportions are enlarged
A: Sexual maturity is attained early
Answer: A: Sexual maturity is attained early 
Explanation: None