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
Weil felix reaction with OXK antigen indicates infection with - 
Select and explain. 
A. R. tsutsugamushi, B. R. Mooseri, C. R. Quintana, D. R. Akari
A: R. tsutsugamushi
Answer: A: R. tsutsugamushi 
Explanation: Ans. is 'a' i.e., R. tsutsugamushi