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
Spermin is detected in semen by which test - 
Select and explain. 
A. Barberio test, B. Florence, C. ELISA, D. Agglutination inhibition
A: Barberio test
Answer: A: Barberio test 
Explanation: Barberio's test → Yellow coloured crystals of spermin picrate.
Florence test → 4 Brown crystals of choline periodide.