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': 'The development of resistance to conventional treatment has led WHO to recommend the use of combination therapies containing artemisinin derivative (artemisinin-based combination therapies also known as ACTs). All of the following combination therapies are recommended if such resistance is suspected, except \nSelect and explain. \nA. Artemether plus lumefantrine, B. Artesunate plus quinine, C. Artesunate plus pyrimethamine-sulfadoxine, D. Artesunate plus mefloquine', 'role': 'user'}, {'content': 'Answer: B \nExplanation: The WHO recommended ACTs include:\n\nArtemether-lumefantrine\nArtesunate-amodiaquine\nArtesunate-mefloquine\nArtesunate-sulfadoxine-pyrimethamine\nDihydroartemisinin-piperaquine', 'role': 'assistant'}]