This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Skeletal system, Subject name: Radiology
Calcification of interveebral disc is seen in - 
Select and explain. 
A. Gout, B. Rheumatoid ahritis, C. Alkaptonuria, D. Psoriasis
C: Alkaptonuria
Answer: C: Alkaptonuria 
Explanation: Interveebral disc calcification seen in : Ochronosis /Alkaptonuria Ankylosing spondylitis Pseudogout Hemochromatosis Hypervitaminosis D Transient interveebral disc calcification Juvenile chronic ahritis Hyperparathyroidism Amyloidosis Poliomyelitis Acromegaly