Choose the correct answer for the given question from the options.
19. For this question two statements are given - one labelled as Assertion (A) and other labelled as Reason (R). Select correct answer to this question from the codes as given below.
\(Assertion\ (A)\): The direction of electron flow in a conductor is from low potential to high potential.
\(Reason\ (R)\): A dry cell ensures a continuous potential difference across the conductor.
\(Reason\ (R)\): A dry cell ensures a continuous potential difference across the conductor.