What of the Following Is the Most Accurate Definition of Postural

What of the following is the most accurate definition of postural orthostatic hypotension?

A) Decrease in systolic blood pressure of 20 mm Hg or decrease in diastolic blood pressure of 10 mm Hg and a 10% to 20% increase in pulse rate
B) Increase in systolic blood pressure of 20 mm Hg or increase in diastolic blood pressure of 10 mm Hg and 10% to 20% decrease in pulse rate
C) Decrease in systolic blood pressure of 20 mm Hg or increase in systolic blood pressure of 10 mm Hg and 10% to 20% increase in pulse rate
D) Decrease in systolic blood pressure of 20 mm Hg or decrease in systolic blood pressure of 10 mm Hg and 10% to 20% decrease in heart rate