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: Physiology
In CSF, comparison to blood plasma are all except: 
Select and explain. 
A. Low Ca ++, B. Low Na +, C. Low chloride, D. Low cells
C: Low chloride
Answer: C: Low chloride 
Explanation: Low chloride