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 T. brucei ? \nSelect and explain. \nA. Amastigote, B. Trypomastigote, C. Egg, D. None', 'role': 'user'}, {'content': "Answer: B \nExplanation: Ans. is 'b' i.e., Trypomastigote", 'role': 'assistant'}]