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
Cofactor for lipoprotein lipase is 
Select and explain. 
A. apo A-I, B. apo A-II, C. apo C-II, D. apo C-III
C: apo C-II
Answer: C: apo C-II 
Explanation: Both phospholipids and apo C-II are required as cofactors for lipoprotein lipase activity, while apo A-II and apo C-III act as inhibitors. Reference: Harper; 30th edition; Page no: 257