This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Anti Microbial, Subject name: Pharmacology
All of the following drug inhibit the cell wall synthesis except: 
Select and explain. 
A. Penicillin, B. Fosfomycin, C. Vancomycin, D. Tetracycline
D: Tetracycline
Answer: D: Tetracycline 
Explanation: Ans. D. TetracyclineDrugs inhibiting the cell wall synthesis- beta lactam, bacitracin, vancomycin, cycloserine, Fosfomycin. Tetracycline acts via protein synthesis inhibition.