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': '"Chagas Disease" is caused by: \nSelect and explain. \nA. Trypanosoma, B. Brucella, C. Trichenella, D. Baonella', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Trypanosoma', 'role': 'assistant'}]