Which statement is not true regarding recovery heart rate?
a.) five minutes after your exercise session ends, your heart rate should be 120 bpm or below.
b.) ten minutes after your exercise session ends, your heart rate should be 100 bpm or below.
c.) if your recovery heart rate is still above 100 after 10 minutes, it is possible that the exercise intensity was too high.
d.) if your heart rate drops to the pre-exercise level after 10 minutes, you are out of shape.