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
All of the following drugs act on cell membrane EXCEPT : 
Select and explain. 
A. Nystatin, B. Griseofulvin, C. Amphotericin B, D. Polymyxin B
B: Griseofulvin
Answer: B: Griseofulvin 
Explanation: It acts by affecting mitosis but the exact mechanism is not known.