This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Advanced Neurospinal Imaging, Subject name: Radiology
[{'content': 'Investigation of choice for Neuroangiofibroma is? \nSelect and explain. \nA. USG, B. MRI, C. Contrast enhanced CT scan, D. Plain CT scan', 'role': 'user'}, {'content': 'Answer: C \nExplanation: ANSWER: (C) Contrast enhanced CTREF: Thoracic imaging: a practical approach - Page 197, Pol J Radiol, 2005; 70(3): 90-92"Contrast enhanced CT scan is the investigation of choice for Neuroangiofibroma\'', 'role': 'assistant'}]