This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Parasitology, Subject name: Microbiology
[{'content': 'Which of the following parasite is/are ovoviviparous? \nSelect and explain. \nA. Strongyloides stercoralis, B. Enterobius vermicularis, C. Trichuris trichura, D. Dracunculus medinensis', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Ans. a (Strongyloides stercoralis) (Ref. Chaterjee, Parasitology 12th ed., 159)VIVIPAROUS (Gives birth to larvae)OVIPAROUS (laying eggs) (Mnemonic- ATANE....)OVOVIVIPAROUS(Laying eggs containing larvae, which are immediately hatched)D. medinensisA. duodenaleStrongyloides stercoralisW. bancroftiT. trichura B. malayiA. lumbricoides T. spiralisN. americanusE. vermicularis', 'role': 'assistant'}]