This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Ballistics, Subject name: Forensic Medicine
Which of the following is not seen in fired caridge case 
Select and explain. 
A. Rifling markings, B. Firing pin marking, C. Extractor markings, D. Ejector markings
A: Rifling markings
Answer: A: Rifling markings 
Explanation: Fired caridge case shows Firing pin marking, Extractor markings & Ejector marking. Rifling markings are found only in fired bullet; not in the fired caridge case.