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: Pediatrics
1st Visible sign of puberty in males is 
Select and explain. 
A. Testicular enlargement > 3ml in Stage III, B. Testicular enlargement > 4ml in Stage II, C. Growth of penis, D. Testicular enlargement > 3ml in Stage I
B: Testicular enlargement > 4ml in Stage II
Answer: B: Testicular enlargement > 4ml in Stage II 
Explanation: Tanner's staging in Males
Stage I :
Testicular size < 4ml
Stage II : 
Sparse hair growth
Scrotum and testis (>4ml) enlarge
Stage III : 
Hair growth darkens
Penis grows in lenght
Stage IV :
Hair growth becomes dense and coarse
Scrotum and penis continues to grow
Growth spurt occurs
Stage V :
Hair growth extend to inner thigh
Genitalia reaches adult size