The Most Accurate Way to Determine Heart Rate Would Be

Multiple Choice

The most accurate way to determine heart rate would be to

A) Count the number of P waves in a minute-long rhythm strip.
B) Count the number of QRS complexes in a minute-long rhythm strip.
C) Count the number of QRS complexes on a six-second strip and multiply by 10.
D) Count the number of P waves on a six-second strip and multiply by 10.