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
Drug not given for malaria prophylaxis is : 
Select and explain. 
A. Chloroquine, B. Proguanil, C. Doxycycline, D. Artesunate
D: Artesunate
Answer: D: Artesunate 
Explanation: None