This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Other topics and Adverse effects, Subject name: Anatomy
This drug can clear trip trypansomes from Blood and lymph nodes and is active in late CNS stage of African sleeping sickness. it is 
Select and explain. 
A. Emetine, B. Melarsoprol, C. Nifuimox, D. Suramin
B: Melarsoprol
Answer: B: Melarsoprol 
Explanation: Ref-Katzung 10/e p863 Treatment of trypansomes is African sleeping sickness Early haemolymphatic stage :Suramin Late CNS stage: melarsoprol South American disease (chagas disease):nifuimox