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': 'In the tongue, bitter taste is more perceived at: \nSelect and explain. \nA. Tip, B. Sides, C. Back, D. Front', 'role': 'user'}, {'content': 'Answer: C \nExplanation: None', 'role': 'assistant'}]