This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Nervous System, Subject name: Radiology
[{'content': 'Investigation of choice for meningeal carcinomatosis? \nSelect and explain. \nA. NC-CT, B. CE-CT, C. MRI with Gadolinium, D. PET', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Ans CMeningeal carcinomatosis is invasion of meninges by carcinoma cells. Malignancies of lung, breast and melanoma are commonly involved.Contrast enhanced MRI is investigation of choice for evaluation', 'role': 'assistant'}]