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: Medicine
Red man syndrome is caused by: 
Select and explain. 
A. Telithromycin, B. Telavancin, C. Vancomycin, D. Rifampin
C: Vancomycin
Answer: C: Vancomycin 
Explanation: It causes anaphylactoid reaction - red man syndrome Ref: Harrison, Edition-18, Page : 1146.