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
Circumvallate papillae are associated with: 
Select and explain. 
A. Sweet taste., B. Sour taste., C. Bitter taste., D. All of the following.
C: Bitter taste.
Answer: C: Bitter taste. 
Explanation: None