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: Pathology
"Hairy Tongue" is a condition in which certain structures become enlarged. 
Select and explain. 
A. Fungiforrn papillae, B. Filiform papillae, C. Circumvallate papillae, D. Taste buds
B: Filiform papillae
Answer: B: Filiform papillae 
Explanation: None