This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Pubey and Adolescent Health, Subject name: Pediatrics
At the onset of pubey the testicular size reaches? 
Select and explain. 
A. 2 ml, B. 4 ml, C. 8 ml, D. 12 ml
B: 4 ml
Answer: B: 4 ml 
Explanation: At the onset of pubey the testicular size reaches 4 ml volume or 2.5 cm length.