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 one of the following is ineffective in acute iron toxicity : \nSelect and explain. \nA. Desferrioxamine, B. BAL, C. Whole bowel irrigation, D. Deferasirox', 'role': 'user'}, {'content': 'Answer: B \nExplanation: None', 'role': 'assistant'}]