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
The fastest acting schizontocidal drug among the following is : 
Select and explain. 
A. Artemether, B. Mefloquine, C. Chloroquine, D. Proguanil
A: Artemether
Answer: A: Artemether 
Explanation: None