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 nitrogen mustards can be decreased by : \nSelect and explain. \nA. Amifostine, B. Folinic acid, C. GM–CSF, D. MESNA', 'role': 'user'}, {'content': 'Answer: C \nExplanation: None', 'role': 'assistant'}]