单项选择题

A.VC正常、FEV1%正常、RV/TLC<40%
B.VC降低、FEV1%正常、RV/TLC<40%
C.VC降低、FEV1%增加、RV/TLC>40%
D.VC正常、FEV1%降低、RV/TLC<40%
E.VC降低、FEV1%降低、RV/TLC>40%