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': 'Second intermediate host of Diphyllobothrium latum is - \nSelect and explain. \nA. Cylops, B. Man, C. Snail, D. Fresh water fish', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Definitive host : Man (optimal) First intermediate host:Freshwater copepod, mainly of genera cyclops or Diaptomus second intermediate host: freshwater fish Ref; panikers textbook of Medical parasitology 8th edition page 118', 'role': 'assistant'}]