单项选择题

A.1kPa(7.5mmHg)
B.1.33kPa~2.67kPa(10mmHg~20mmHg)
C.3.33kPa~4.0kPa(25mmHg~30mmHg)
D.2.7kPa~5.3kPa(20mmHg~40mmHg)
E.4.0kPa~5.0kPa(30mmHg~40mmHg)