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 3 year old child can do all, except - \nSelect and explain. \nA. Eat with a spoon, B. Climb stairs running, C. Walk properly, D. Vocabulary of 20-100 words', 'role': 'user'}, {'content': "Answer: B \nExplanation: Ans. is 'b' i.e., Climb stairs running", 'role': 'assistant'}]