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
[{'content': 'Order of development of secondary sexual characteristics in male- \nSelect and explain. \nA. Testicular development- pubic hair- axillary hair-beard, B. Pubic hair- testicular development- axillary hair--beard, C. Testicular development- beard- pubic hair- axillary hair, D. Axillary hair-beard- pubic hair- testicular development', 'role': 'user'}, {'content': 'Answer: A \nExplanation: The sequence of development of secondary sexual characteristics in boys: Testicular enlargement - Penis enlargement - Pubic hair growth- Peak growth velocity -Axillary hair -Facial hair', 'role': 'assistant'}]