This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Mechanical injuries, Subject name: Forensic Medicine
Which of the following bullets leaves a visible mark in path so that a person can see it - 
Select and explain. 
A. Tandem bullet, B. Tracer bullet, C. Dum Dum Bullet, D. Incendiary Bullet
B: Tracer bullet
Answer: B: Tracer bullet 
Explanation: The synopsis of forensic medicine & toxicology ; Dr k.s narayan reddy ;28th edition ; pg.no. 126 Tracer bullet leaves a mark or trace while in fight due to which the gunner can observe the strike of shot .