[单选题]
下列何种血气分析变化属于Ⅰ型呼吸衰竭
A.PaO
65mmHg，PaCO40mmHg
B.PaO55mmHg，PaCO45mmHg
C.PaO50mmHg，PaCO60mmHg
D.PaO85mmHg，PaCO55mmHg
E.PaO75mmHg，PaCO30mmHg
A.PaO65mmHg，PaCO40mmHg
B.PaO55mmHg，PaCO45mmHg
C.PaO50mmHg，PaCO60mmHg
D.PaO85mmHg，PaCO55mmHg
E.PaO75mmHg，PaCO30mmHg