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: Surgery
Which of the following factors in bile juice is responsible for preventing the precipitation of cholesterol and formation of gallstones- 
Select and explain. 
A. High alkaline condition, B. High concentration of bicarbonates, C. Bile salts, D. Bile pigments
C: Bile salts
Answer: C: Bile salts 
Explanation: None