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': 'Investigation of choice for evaluation of acute head injury: AIIMS 14 \nSelect and explain. \nA. CECT Head, B. NCCT Head, C. MRI Brain, D. CT Angiography', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Ans. NCCT Head', 'role': 'assistant'}]