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': 'A 5 year lod child is assessed to have developmental age of one year. His developmental patient would be \nSelect and explain. \nA. 100, B. 80, C. 20, D. 60', 'role': 'user'}, {'content': 'Answer: C \nExplanation: None', 'role': 'assistant'}]