This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Forensic Medicine
[{'content': 'Arun was hit by a car and thrown up. He hits the road divider and falls on the ground and sustains head injury then run over by another car. The head injury is classified as: JIPMER 14 \nSelect and explain. \nA. Primary, B. Primary impact, C. Secondary, D. Secondary impact injury', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Ans. Secondary', 'role': 'assistant'}]