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': 'Bell stage for deciduous teeth; bud stage for permanent teeth, seen at: \nSelect and explain. \nA. 32 weeks., B. 18 weeks., C. 14 weeks., D. 55 -56 days.', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Time Line of Human Tooth Development', 'role': 'assistant'}]