This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Psoriasis, Subject name: Dental
Ahritis mutilans is a feature of? 
Select and explain. 
A. Lichen planus, B. Psoriasis, C. Staphylococcal scalded skin syndrome, D. Eczema
B: Psoriasis
Answer: B: Psoriasis 
Explanation: PSORIATIC AHRITIS Classical (DIP type) most commonly involving the distal interphalangeal joints and less commonly the knees, hips, ankles, and wrists; Asymmetric oligo-aicular type (MC type) Symmetrical polyaicular type Disease limited to the spine (psoriatic spondylitis). Ahritis mutilans(X-Ray shows pencil in cup sign, pestle in moar sign)