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': '100. A Patient presents with pain in Meta-Tarso-Phalangeal joints and is a known case of chronic renal failure. This is due to accumulation of: \nSelect and explain. \nA. Rh factor, B. Uric acid, C. Serum urea, D. HLA B27 typing', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Ans. b. Uric acid The underlying basis of gouty ahritis is increased serum uric acid level. Most common joint involved in gout: Meta-Tarso-Phalangeal jointsQ Precipitation of monosodium urate crystalsdeg into the joints is the underlying basis for these urate crystals is increased total body urate levels', 'role': 'assistant'}]