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
[{'content': 'The mechanism of antibacterial action of cephalosporins involves : \nSelect and explain. \nA. Inhibition of the synthesis of precursors of peptidoglycan, B. Interference with the synthesis of ergosterol, C. Inhibition of transpeptidation reaction, D. Inhibition of beta-lactamase', 'role': 'user'}, {'content': 'Answer: C \nExplanation: None', 'role': 'assistant'}]