This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: G.I.T, Subject name: Physiology
Bile acid has a detergent action due to 
Select and explain. 
A. Formation of soap, B. Formation of zwitter ion, C. Amphipathic in nature, D. Formation of medium chain triglycerides
C: Amphipathic in nature
Answer: C: Amphipathic in nature 
Explanation: Bile contains bile acids, which are critical for digestion and absorption of fats and fat-soluble vitamins in the small intestine. Many waste products, including bilirubin, are eliminated from the body by secretion into bile and elimination in feces. Ref: guyton and hall textbook of medical physiology 12 edition page number:437,438,439