This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Sexual offences, Subject name: Forensic Medicine
To examine the vaginal cells in the rape accused, the test used is 
Select and explain. 
A. Lugol's iodine test, B. Takayama test, C. Florence test, D. Precipitin test
A: Lugol's iodine test
Answer: A: Lugol's iodine test 
Explanation: Lugol's iodine test is to detect vaginal epithelial cells containing glycogen. Takayama test is to detect blood stains; while Florence test is test for seminal stain.