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: None', 'role': 'assistant'}]