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: Forensic Medicine
Choline in seminal fluid is detected by 
Select and explain. 
A. Barberio test, B. Florence test, C. ELISA, D. Agglutination inhibition
B: Florence test
Answer: B: Florence test 
Explanation: Florence test - Detection of choline.
Barberio's test - Detection of spermine.