This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Crystal Ahropathy, Subject name: Medicine
[{'content': 'All joints are involved in acute gout except: \nSelect and explain. \nA. MTP, B. Gleno-humeral joint, C. Ankle joint, D. Knee joint', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Other than the great toe, the most common sites of gouty ahritis are the ankle, wrist, finger joints, and knee. In early gout, only 1 or 2 joints are usually involved. Consider the diagnosis in any patient with acute monoaicular ahritis of any peripheral joint except the glenohumeral joint of the shoulder.', 'role': 'assistant'}]