This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Primary Immunodeficiency, Subject name: Pediatrics
Joint erosions are typically absent in:` 
Select and explain. 
A. Rheumatoid ahritis, B. Systemic lupus erythematosus, C. Psoriatic ahritis, D. Osteoahritis
B: Systemic lupus erythematosus
Answer: B: Systemic lupus erythematosus 
Explanation: Ahritis seen in SLE is Non-erosive ahritis (without deformity).