This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: General physiology, Subject name: Physiology
Which of the following is the most abundant diet of animal origin? 
Select and explain. 
A. Phospholipids, B. Cholesterol esters, C. Cholesterol, D. Triglycerides
D: Triglycerides
Answer: D: Triglycerides 
Explanation: The triacylglycerols are esters of the trihydric alcohol glycerol and fatty acids and are available abundantly in animal diet Ref: Harper's Biochemistry; 30th edition; Chapter 21; Lipids of Physiologic Significance