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
Agglutination test is ? 
Select and explain. 
A. ABO incompatibility, B. VDRL, C. Weil- felix test, D. FTA-ABS
C: Weil- felix test
Answer: C: Weil- felix test 
Explanation: Ans. is 'c' i.e., Weil- Felix