诊断呼吸衰竭的血气标准是

A.PaO< 8.6kPa(65mmHg)和（或）伴有PaCO> 7.3kPa(55mmHg)

B.PaO< 6.7kPa(50mmHg)和（或）伴有PaCO> 8.0kPa(60mmHg)

C.PaO< 8.0kPa(60mmHg)和（或）伴有PaCO> 7.3kPa(55mmHg)

D.PaO< 8.0kPa(60mmHg)和（或）伴有PaCO> 6.7kPa(50mmHg)

E.PaCO< 8.6kPa(65mmHg)和（或）伴有PaCO> 6.7kPa(50mmHg)