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': 'Circumvallate papillae are associated with: \nSelect and explain. \nA. Sweet taste., B. Sour taste., C. Bitter taste., D. All of the following.', 'role': 'user'}, {'content': 'Answer: C \nExplanation: None', 'role': 'assistant'}]