1. Each peak in the ECG is identified with a letter from P to T that corresponds to a specific electrical activity of the heart. 2. The number of QRS complexes that occur in a given time period can seldom correlate with heart beat rate of an individual. Regarding 1 and 2 :

Question

( A ) Both are incorrect
( B ) 1 is incorrect but 2 is correct
( C ) Both are correct
( D ) 1 is correct but 2 is incorrect