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
[{'content': 'Order of development of secondary sexual characteristic 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: In boys, the first visible sign of puberty and the hallmark of SMR 2 is testicular enlargement.\nThe sequence of development of secondary sexual characteristic in boys is -\n\nTesticular enlargement —> Penis enlargement > Pubic hair growth --> Peak growth velocity —> Axillary hair —> facial hair.', 'role': 'assistant'}]