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': 'Liposomal amphotericin B has the following advantage over conventional amphotericin B : \nSelect and explain. \nA. Lesser nephrotoxicity, B. Lesser cost, C. Absence of infusional toxicity, D. Once a week administration', 'role': 'user'}, {'content': 'Answer: A \nExplanation: None', 'role': 'assistant'}]