This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Parasitology Pa 2 (Helminthology), Subject name: Microbiology
[{'content': 'Calabar swellings seen in: \nSelect and explain. \nA. Ascaris, B. Hymenolepis, C. Loa Loa, D. Strongyloides', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Calabar swellings are localized subcutaneous edemas, a type of inflammatory reaction brought about by a host response to the worm or its metabolic products. Argyll-Robeson described the adult worms of LOA LOA that he extracted from the eye of a woman who had resided at Old Calabar in West Africa.', 'role': 'assistant'}]