This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Growth, Subject name: Pediatrics
[{'content': 'Height of children in 2 - 10 years of age is increased by: \nSelect and explain. \nA. 2cm/year, B. 4cm/year, C. 6cm/year, D. 10cm/year', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Height Velocity in Children: Age Normal range 2 - 5 years 6 cm/ year* 5 - 10 years 5-6 cm/year', 'role': 'assistant'}]