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: ENT
CSF is similar to - 
Select and explain. 
A. Endolymph, B. Perilymph, C. Cortilymph, D. Urine
B: Perilymph
Answer: B: Perilymph 
Explanation: None