<prompt> All are true about Interstitial Fibrosis, ExceptFVC 80 PredictedFEV 1 FVC 0.7DLCO is decreasedTLC is decreased  <response>: Answer is B FEV1FVC 0.7: Interstitial lung disease like interstiul fibrosis are characterized by a normal or elevated FEV IFVC ratio which is characteristically 0.7. PFT results comparing obstructive and restrictive disease may not be applicable for all forms of lung disease FEVIforeed expiratory volume in one second; FVCForced Vital Capacity; FEF25_75Foreed Expiratory Flow at 2575 vital capacity; TLC Total Lung Capacity; DLCODiffusion Capacity of the Lung for Carbon monoxide. 