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: Dental
[{'content': '1st evidence of calcification of Upper canine is seen in \nSelect and explain. \nA. 4-5 months, B. 1 year, C. 2-3 months, D. 15 wk IU', 'role': 'user'}, {'content': 'Answer: A \nExplanation: None', 'role': 'assistant'}]