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 drug is used for radical cure- \nSelect and explain. \nA. Choloroquine, B. Primaquine, C. Quinine, D. Mepacrine', 'role': 'user'}, {'content': "Answer: B \nExplanation: Ans. is 'b' i.e., Primaquine o Drugs which act on exoerythrocytic stage in liver (hypnozoites) are used for radical cure. Primaquine is the only drug which is used for radical cure.", 'role': 'assistant'}]