This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Microbiology
[{'content': 'Infective form of Trypanosoma \nSelect and explain. \nA. Promastigote, B. Metacyclic Trypomastigotie, C. Pseudocyst, D. None of the above', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Infective form: Metacyclic Trypomastigotes.', 'role': 'assistant'}]