This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: General anatomy, Subject name: Anatomy
Function of cholesterol in plasma membrane: 
Select and explain. 
A. Helps in transpo of ions, B. Helps in exocytosis, C. Maintains fluidity, D. Helps in synthesis of bile salts
C: Maintains fluidity
Answer: C: Maintains fluidity 
Explanation: Cholesterol maintains the fluidity of the membrane