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
MHC CLASS III CODES for all except – 
Select and explain. 
A. complement C3, B. properdin, C. TNF –alpha, D. heat shock proteins.
A: complement C3
Answer: A: complement C3 
Explanation: None