This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Systemic Lupus Erythematous, Subject name: Medicine
Shrinking lung syndrome is seen in? 
Select and explain. 
A. SLE, B. MCTD, C. Rheumatoid ahritis, D. Scleroderma
A: SLE
Answer: A: SLE 
Explanation: Option A : Shrinking lung syndrome seen in SLE.