This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: All India exam, Subject name: Microbiology
[{'content': 'The treatment of early stage of East African sleeping sickness is by \nSelect and explain. \nA. Pentamidine, B. Eflornithine, C. Suramin, D. Melarsopol', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Early stage (Normal CSF)Late stage (Abnormal CSF = CNS involvement)W. African (T. brucei gambiense)PentamidineEflornithineE. African (T. brucei rhodesiense)SuraminMelarsoprol', 'role': 'assistant'}]