This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: JIPMER 2018, Subject name: Surgery
[{'content': 'According to Spetzler-Main criteria, how much score is given for a 5 cm nidus with AV malformation? \nSelect and explain. \nA. 3, B. 4, C. 2, D. 5', 'role': 'user'}, {'content': "Answer: C \nExplanation: Spetzler-Main AVM grading scale. Graded Feature Points Assigned Size of AVM < 3 cm 3-6 cm >6 cm 1 2 3 Eloquence1 of adjacent brain Noneloquent Eloquent 0 1 Venous drainage Superficial Deep 0 1 'Eloquent areas include: visual, language, and sensorimotor coex; the thalamus and hypothalamus; the internal capsule; the brainstem; the cerebellar peduncles; and the deep cerebellar nuclei.", 'role': 'assistant'}]