This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Parasitology Pa 1 (Protozoology), Subject name: Microbiology
[{'content': 'Seat worm is - \nSelect and explain. \nA. Enterobius, B. Dracunculus, C. Ankylostoma, D. Necator', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Option 1 Enterobius vermicularis: Enterobius vermicularis is also called as Pinworm, seat worm, or threadworm. Habitat: large intestine Host: only man Infective form: Eggs Mode of transmission: ingestion of eggs with contaminated fingers or autoinfection. Option 2 Dracunculus medinensis:Causes Guinea worm disease or dracunculiasis. Option 3, 4 Hookworm: Ankylostoma duodenale and Necator americanus.', 'role': 'assistant'}]