单项选择题

A.120/70mmHg(16/9.3kPA.
B.100/70mmHg(13.3/9.3kPA.
C.90/60mmHg(12.0/8.0kPA.
D.90/50mmHg(12.0/6.7kPA.
E.80/50mmHg(10.7/6.7kPA.