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
Rose-waaler test is 
Select and explain. 
A. Precipitation test, B. Passive agglutination test, C. Neutralisation test, D. Complement fixation test
B: Passive agglutination test
Answer: B: Passive agglutination test 
Explanation: It is rapid slide haemagglutination test for detection of rheumatoid factor.