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
[{'content': 'Mebendazole cannot be used for : \nSelect and explain. \nA. Ascariasis, B. Entrobius vermicularis, C. Onchocercosis, D. Hydatid cyst disease', 'role': 'user'}, {'content': 'Answer: C \nExplanation: None', 'role': 'assistant'}]