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
[{'content': 'Which of the following antibiotics acts by inhibiting cell wall synthesis? \nSelect and explain. \nA. Cefepime, B. Aminoglycosides, C. Erythromycin, D. Doxycycline', 'role': 'user'}, {'content': "Answer: A \nExplanation: Ans. is 'a' i.e. Cefepime", 'role': 'assistant'}]