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': 'The slender rhabditiform larvae of which of the following helminths move about in water and are ingested by species of cyclops? \nSelect and explain. \nA. D. Latum, B. D. Medinensis, C. W. Bancrofti, D. S. Mansoni', 'role': 'user'}, {'content': "Answer: B \nExplanation: Ans. is 'b' i.e., D. Medinensis(Ref: Harrison, 19th/e, p. 1422-1423; Chatterjee, 12th/e, p. 204)* Larva of D. Medinensis is ingested by Cyclops in the water.", 'role': 'assistant'}]