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
Which of the following drug is used for radical cure- 
Select and explain. 
A. Choloroquine, B. Primaquine, C. Quinine, D. Mepacrine
B: Primaquine
Answer: B: Primaquine 
Explanation: 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.