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
[{'content': 'Bullet entry wound, for bullet entering at acute angle is identified by what shape of abrasion collar - \nSelect and explain. \nA. Circular, B. Rectangular, C. Oval, D. None of the above', 'role': 'user'}, {'content': 'Answer: C \nExplanation: The synopsis of forensic medicine & toxicology ; Dr k.s narayan reddy ; 28th edition ;pg.no 132 ; If bullet strikes at right angle abrasion collar is circular & uniform ,if acute angle the abrasion collar will be oval due to increased width on one one side .', 'role': 'assistant'}]