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': 'Characteristics of SMR-2 in boys ? \nSelect and explain. \nA. Appearance of pubic hair, B. Appearance of axillary hair, C. Enlargement of scrotum, D. All of above', 'role': 'user'}, {'content': "Answer: C \nExplanation: Ans. is 'c' i.e., Enlargement of scrotum", 'role': 'assistant'}]