This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Injuries by Firearms, Subject name: Forensic Medicine
Primary & secondary markings over metal bullet help in? 
Select and explain. 
A. Identification of weapon, B. Identification of wound, C. Identification of person, D. Severity of tissue damage
A: Identification of weapon
Answer: A: Identification of weapon 
Explanation: Ans. is 'a' i.e., Identification of weapon o Primary markings (class characteristics) and secondary markings (metallic fouling, individual or accidental characteristics) on a bullet can be used for identification of weapon.