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
Which of the following is used in rape victims to determine of rupture of hymen and whether rupture is recent or old: 
Select and explain. 
A. Glaister Keene Rods, B. Gaba Rod, C. Gram Rod, D. Cylinder Rod
A: Glaister Keene Rods
Answer: A: Glaister Keene Rods 
Explanation: A i.e. Glaister Keene's Rods