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': 'Which of the following mechanism is mainly responsible for gentamicin induced ototoxicity ? \nSelect and explain. \nA. Direct hair cell toxicity, B. Binding to and inhibition of hair cell Na+ K+ ATPase, C. Non–cumulative toxicity, D. Bind to Ca2+ channels', 'role': 'user'}, {'content': 'Answer: A \nExplanation: None', 'role': 'assistant'}]