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': 'Choose the drug whose single oral dose affords clinical cure of uncomplicated malaria caused by chloroquine sensitive/resistant P. falciparum as well as P. vivax : \nSelect and explain. \nA. Quinine, B. Mefloquine, C. Artesunate, D. Proguanil', 'role': 'user'}, {'content': 'Answer: B \nExplanation: None', 'role': 'assistant'}]