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': 'Extensive abrasions are found all over the body of a pedestrian lying by the road side. What is the likely cause? \nSelect and explain. \nA. Primary impact injury, B. Secondary impact injury, C. Secondary injury, D. Postmoem aifact', 'role': 'user'}, {'content': 'Answer: C \nExplanation: The synopsis of forensic medicine & toxicology ;Dr k.s narayan reddy; 28th edition ;pg,no. 148 There is extensive abrasion all over the body of the victim more over the victim was a pedestrian so it may be caused by striking the ground ,rather than the vehicle itself hence it must be a secondary injury .', 'role': 'assistant'}]