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: Pediatrics
Sign of pubey in boys is 
Select and explain. 
A. Enlargement of penis, B. Enlargement of testes, C. Appearance of pubic hair, D. Appearance of axillary hair
B: Enlargement of testes
Answer: B: Enlargement of testes 
Explanation: In girls, the first visible sign of pubey is the appearance of breast buds (Thelarche), between 8-12 years of ageIn boys the first visible sign of pubey is testicular enlargement, beginning as early as 9 1/2 yr.(Refer: Nelson's Textbook of Pediatrics, SAE, 1st edition, pg no. 926)