Assertion: Intercalated discs are important regions of cardiac muscle cells.
Reason: Intercalated discs function as boosters for muscle contraction waves.
A. If both assertion and reason are true and the reason is the correct explanation of the assertion
B. If both assertion and reason are true but reason is not the correct explanation of the assertion
C. If the assertion is true but reason is false
D. If the assertion is false but the reason is true
