According to the ACSM, which of the following individuals would meet the threshold criteria for the risk factor of hypertension?
a. a teenager whose last two blood pressure (BP) readings were 112/84 mmHg and 125/88 mmHg, controlled with medication
b. a male whose last two BP readings were 110/70 mmHg and 114/66 mmHg
c. a grandmother whose last two BP readings were 156/84 mmHg and 132/80 mmHg
d. a father whose last two BP readings were 128/86 mmHg and 136/80 mmHg