A.10~21mmHg B.≤5mmHg C.≤8mmHg D.>5mmHg E.>8mmHg
A.11~20mmHg B.10~20mmHg C.11~21mmHg D.10~21mmHg E.11~22mmHg
A.5% B.7% C.10% D.15% E.25%