单项选择题

A.pH7.34,PaCO228.5mmHg,HCO15mmol/L
B.pH7.38,PaCO280mmHg,HCO49mmol/L
C.pH7.21,PaCO273mmHg,HCO23mmol/L
D.pH7.38,PaCO224mmHg,HCO14mmol/L
E.pH7.30,PaCO262mmHg,HCO31mmol/L