This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Interstitial Lung Disease, Subject name: Medicine
ILD showing obstructive pattern can be seen in? 
Select and explain. 
A. Idiopathic pulmonary fibrosis, B. Non-specific interstitial pneumonitis, C. Pulmonary lymphangioleiomyomatosis, D. Cryptogenic organising pneumonia
C: Pulmonary lymphangioleiomyomatosis
Answer: C: Pulmonary lymphangioleiomyomatosis 
Explanation: Mostly ILD's have Restrictive pattern except few with obstructive pattern are:- 1) Sarcoidosis 2) Hypersensitivity pneumonitis 3) Pulmonary lymphangioleiomyomatosis