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 4 year child can perform one of the following ? \nSelect and explain. \nA. Can hop on single leg for 15 feet, B. Can skip without falling to either side, C. Can stand one feet for 20 seconds, D. All', 'role': 'user'}, {'content': "Answer: A \nExplanation: Ans. is 'a' i.e., Can hop on single leg for 15 feet o A child can hop on one foot by 4 years. o A child can skip by the age of 5 years. o A child may stand on one leg for 10 seconds (not for 20 seconds) by 4-5 years. o A child can go down stairs with alternating feet by 4 years", 'role': 'assistant'}]