This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Assessment of Growth, Subject name: Pediatrics
First Sign of pubertal development in boy 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: Ans. is 'b' i.e., Enlargement of testis o In male - Sequence of change1. Growth of testes (> 3 ml in volume or & thinning of scrotum 2 5 cm in longest diameter)2 Pigmentation of scrotum & growth of penisPubic hairAxillary hairo In female -1. Breast bud - First sign2 Pubic hair3. Menarche