Answer: A

Blood pressure standard Medical normal blood pressure is the statistical average obtained through statistical processing of the basal blood pressure of a certain number of people. The standards for adult blood pressure in my country are:

①Normal blood pressure: systolic blood pressure <120mmHg and diastolic blood pressure <80mmHg.

②Normal high value: 120mmHg≤systolic blood pressure<140mmHg and/or 80mmHg≤diastolic blood pressure<90mmHg.

③Hypertension: systolic blood pressure ≥140mmHg and/or diastolic blood pressure ≥90mmHg