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
Counter coup injury seen in when - 
Select and explain. 
A. Moving head is suddenly decelerated, B. Stationery head is suddenly accelerated, C. Fall of heavy object on head, D. None of the above
A: Moving head is suddenly decelerated
Answer: A: Moving head is suddenly decelerated 
Explanation: the synopsis of forensic medicine & toxicology; Dr k.s narayan reddy ;28th edition; pg.no.143 Mechanism of contrecoup injury when a moving head is suddenly decelerated by hitting a firm surface.