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 act by inhibiting call wall synthesis except ? 
Select and explain. 
A. Aminoglycoside, B. Penicillin, C. Cycloserine, D. Bacitracin
D: Bacitracin
Answer: D: Bacitracin 
Explanation: Ans. is 'd' i.e., Pramlinitide