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 of choice for early east African trypanosomiasis : 
Select and explain. 
A. Pentamidine, B. Suramine, C. Melarsoprol, D. Nifurtimox
B: Suramine
Answer: B: Suramine 
Explanation: Early east African trypanosomiasis : Suramine
Late east African trypanosomiasis : Melarsoprol
American trypanosomiasis : Benznidazole