During Your Annual Physical, a Nurse Takes Your Blood Pressure

During your annual physical, a nurse takes your blood pressure by wrapping a sphygmomanometer cuff around your upper arm, which modulates the flow of blood through your brachial artery. The nurse then enters a reading of 115/70 in your medical chart. These numbers mean that the

A) diastolic pressure is 115 and the systolic pressure is 70.
B) pressure in your brachial artery during ventricular contraction is 115, while the pressure during ventricular relaxation is 70.
C) pressure in your brachial artery during ventricular contraction is 115 while the pressure during atrial contraction is 70.
D) nurse heard sounds through the stethoscope only when the pressure in your brachial artery was exactly 115 and again when it was exactly 70.
E) pressure in the ventricles of the heart is 115 when the ventricles are contracting and 70 when the ventricles are relaxing.