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: Medicine
[{'content': 'A 78 years old male presents with headache visual disturbance and tenderness over his right temporal region. Abiopsy taken from his right temporal artery is most likely to show - \nSelect and explain. \nA. Acute organizing thrombus formation, B. Granulomatous inflammation with giant cells, C. Luminal thrombosis, D. Aneurysmal dilatation with subintimal inflammation', 'role': 'user'}, {'content': 'Answer: B \nExplanation: None', 'role': 'assistant'}]