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: Pharmacology
[{'content': 'Drug of choice for treatment of infestation due to Onchocerca volvolus is: \nSelect and explain. \nA. Albendazole, B. Ivermectin, C. Praziquantal, D. Suramin', 'role': 'user'}, {'content': 'Answer: B \nExplanation: (Ref: KDT 6/e p813, 8140 Ivermectin is used for onchocerca and strongyloides, for all other nematodes, DOC is albendazole and for cestodes and flukes, DOC is praziquantal.', 'role': 'assistant'}]