This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Lipoproteins, Subject name: Biochemistry
Apolipoprotein that acts as enzyme activator: 
Select and explain. 
A. Apo A-II, B. Apo C-II, C. Apo B-100, D. Apo E
B: Apo C-II
Answer: B: Apo C-II 
Explanation: None