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
Extensive abrasions are found all over the body of a pedestrian lying by the road side. What is the likely cause? 
Select and explain. 
A. Primary impact injury, B. Secondary impact injury, C. Secondary injury, D. Postmoem aifact
C: Secondary injury
Answer: C: Secondary injury 
Explanation: 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 .