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: Radiology
[{'content': 'Calcification of intervertebral disc is seen in – a) Goutb) Rheumatoid c) Alkaptonuriad) Psoriasis \nSelect and explain. \nA. ac, B. bc, C. ad, D. b', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Alkaptonuria (oochronosis) and gout can cause intravertebral disc calcification.', 'role': 'assistant'}]