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
Fever is caused by: 
Select and explain. 
A. IL 3, B. IL 6, C. IL 5, D. IL 9
B: IL 6
Answer: B: IL 6 
Explanation: Ans. b. IL 6