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: Microbiology
Complements synthesized in liver 
Select and explain. 
A. C2,C4, B. C3,C6,C9, C. C5,C8, D. C1
B: C3,C6,C9
Answer: B: C3,C6,C9 
Explanation: None