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': "Pediculus humanus can transmitt: \nSelect and explain. \nA. Sleeping sickness, B. Plague, C. Chaga's disease, D. Relapsing fever", 'role': 'user'}, {'content': "Answer: C \nExplanation: Ans. c. Chaga's disease", 'role': 'assistant'}]