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 for Scrub typhus shows positivity for - 
Select and explain. 
A. OX-K, B. OXK + OX19, C. OX-2, D. OX-19
A: OX-K
Answer: A: OX-K 
Explanation: None