This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: general microbiology, Subject name: Microbiology
Wasserman test is? 
Select and explain. 
A. Agglutination test, B. Precipitation test, C. Neutralisation test, D. Complement fixation test
D: Complement fixation test
Answer: D: Complement fixation test 
Explanation: The Wassermann test or Wassermann reaction (WR) is an antibody test for syphilis, named after the bacteriologist August Paul von Wassermann, based on complement fixation. It was the first blood test for syphilis and the first in the nontreponemal test (NTT) category. Newer NTTs, such as the RPR and VDRL tests, have mostly replaced it. Ref: Ananthanarayana & panikers 9th edition