A subject has a DLCOsb of 8.3 ml CO/min/mm Hg STPD,which is 38% of his predicted value.His calculated DL/VA ratio is 1.1.These values are most consistent with which of the following?
A) Pulmonary emphysema B) Pulmonary resection C) Pulmonary fibrosis D) Pulmonary edema