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: Pharmacology
Red man syndrome occurs with : 
Select and explain. 
A. Clindamycin, B. Teicoplanin, C. Vancomycin, D. Polymyxin
C: Vancomycin
Answer: C: Vancomycin 
Explanation: None