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 of the following antimalarial drug is a slow acting schizonticide: September 2002 \nSelect and explain. \nA. Aemether, B. Mefloquine, C. Pyrimethamine, D. Quinine', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Ans. C i.e. Pyrimethamine', 'role': 'assistant'}]