This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Rickettsiaceae, Subject name: Microbiology
Pediculus humanus can transmitt - 
Select and explain. 
A. Sleeping sickness, B. Plague, C. Chaga's disease, D. Relapsing fever
D: Relapsing fever
Answer: D: Relapsing fever 
Explanation: Ans. is 'd' i.e., Relapsing fever o Body louse (Pediculus. humanus var corporis) can transmit,a) Epidemic typhusb) Trench feverc) Relapsing feverd) Vogabond disease