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': 'Roof of orbit is fractured due to: AIIMS 09 \nSelect and explain. \nA. Blow on forehead, B. Blow on lower jaw, C. Fall on back, D. Blow in parietal region', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Ans. Fall on back', 'role': 'assistant'}]