A Patient's BP Is 118/82 Mm Hg

A patient's BP is 118/82 mm Hg.He asks the nurse to explain "what the numbers mean." The nurse's best reply would be:

A) "The numbers are within normal range and nothing to worry about."
B) "The bottom number is the diastolic pressure and reflects the stroke volume of the heart."
C) "The top number is the systolic BP and reflects the pressure on the arteries when the heart contracts."
D) "The concept of BP is difficult to understand.The main thing to be concerned about is the top number,or systolic blood pressure."