How can a heart rate per minute be determined during a workout? A. Count the pulse in the thumb for 15 seconds by pressing the index finger and thumb together, then multiply by 4.

B. Place the index and middle finger on the base of your neck, count the pulse for 10 seconds, then multiply by 6.

C. Place the thumb over the heart, count the pulse for 6 seconds, then multiply by 10.

D. Place your thumb on your palm of your opposite hand, count the pulse for 10 seconds, then multiply by 6.