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: Anatomy
[{'content': 'Testicular volume at pre-pubeal age is? \nSelect and explain. \nA. 5 ml, B. 10 ml, C. 20 ml, D. 20 ml', 'role': 'user'}, {'content': "Answer: A \nExplanation: 5 ml REF: Gray's anatomy, 39th edition, page 1395The earliest sign of pubey in boys is the growth of the testes and scrotum. The volume of the testes may be estimated - the average adult volume is 20 ml - and a volume of 6 ml indicates that pubey has staed.* 5m1 is the closest possible answer", 'role': 'assistant'}]