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': 'Child stas making tower of 9 cubes by ? \nSelect and explain. \nA. 18 months, B. 24 months, C. 30 months, D. 36 months', 'role': 'user'}, {'content': "Answer: C \nExplanation: Ans. is 'c' i.e., 30 months Bang 2 cube 8 month Tower of 2 cubes 15 month 4 cubes 18 month 6 cubes 22 month 7 cube 24 month 9 cube 30 month 10 cube 36 month", 'role': 'assistant'}]