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
Bony erosion are seen in the following except - 
Select and explain. 
A. Gout, B. Psoriasis, C. SLE, D. Osteoahritis
C: SLE
Answer: C: SLE 
Explanation: Answer- C. SLERheumatoid afihritisGouty ahritis- lst MTPPseudogout knee (Calcium phyrophosphate crystal deposition)Psoriatic ahritisAnkylosi ng spondylitisOA