Assertion (A): Electrocardiogram is record of electrical activity of the heart which shows certa...
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0Assertion (A): Electrocardiogram is record of electrical activity of the heart which shows certain waves called \( \mathrm{P}, \mathrm{Q}, \mathrm{R}, \mathrm{S} \) and T waves.
Reason (R): It gives important information concerning the spread of excitation to the different parts of heart and it is of value in the diagnosis of cases of abnormal cardiac rhythm and myocardial damage.
(A) Both A and R are true and R is the correct explanation of A.br(B) Both A and R are true, but R is not the correct explanation of A.
(C) A is true, but R is false.
(D) A is false, but R is true.
(E) Both A and R are false.
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