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: Biochemistry
Lipotropic factor are all except 
Select and explain. 
A. Choline, B. Lecithin, C. Arginine, D. Methionine
C: Arginine
Answer: C: Arginine 
Explanation: Arginine

Lipotropic factors are substances which prevent the accumulation of fat (TGs) in the liver.
Primary lipotropic factors → choline, betaine, methionine, lecithin, inositol.
Other factors with some lipotropic action:- Vitamin-B12, folic acid, casein, glycine, essential fatty acids, selenium, vitamin E and serine.