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、PaO<8.6kPa(65mmHg)和（或）伴有PaCO>6.7kPa(50mmHg)