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
[{'content': "To examine the vaginal cells in the rape accused, the test used is \nSelect and explain. \nA. Lugol's iodine test, B. Takayama test, C. Florence test, D. Precipitin test", 'role': 'user'}, {'content': "Answer: A \nExplanation: 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.", 'role': 'assistant'}]