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 child is able to build blocks of 5 Cubes developmental age is - \nSelect and explain. \nA. 12 months, B. 15 months, C. 18 months, D. 24 months', 'role': 'user'}, {'content': "Answer: C \nExplanation: Ans. is 'c' i.e., 18 month", 'role': 'assistant'}]