This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Metabolism of lipid, Subject name: Biochemistry
Apoprotein C 
Select and explain. 
A. Activates lipoprotein lipase, B. Inactivates lipoproteindipase, C. Facilitates triglyceride transpo, D. All of the above
D: All of the above
Answer: D: All of the above 
Explanation: Characteristics of apoproteins and their functions apo C-l --Activation of LCAT apo C-ll --Activates extrahepatic lipoprotein lipase in vessel walls; clearance of TAG from chylomicrons and VLDL apo C-lll -- Inhibits lipoprotein lipase; Liver antiatherogenicRef: DM Vasudevan - Textbook of Biochemistry, 8th edition, page no: 151, Table 12.4.