The Rate-Pressure Product (RPP)is Achieved by Multiplying the Heart Rate

The rate-pressure product (RPP) is achieved by multiplying the heart rate by the systolic blood pressure.A five-digit number is obtained,but the last two digits are not used.The number provides an indication of the aerobic exercise condition of the patient.As the aerobic fitness improves,the RPP:

A) reduces.
B) increases.
C) remains the same.
D) doubles.