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': 'Toxicity of Oral Xa inhibitors are treated by \nSelect and explain. \nA. Protamine sulphate, B. Andexanet alfa, C. Idarucizumab, D. Argatroban', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Andexanite alfa is a Xa factor analogue used to treat poisoning of Oral Xa inhibitors like Epixaban, Rivaroxaban.', 'role': 'assistant'}]