A : In the nervous system generation of action potential depends upon influx of sodium ion into axoplasm.
R : Influx of sodium ion during nerve impulse generation is due to efflux of potassium ions .
A. If both Assertion & Reason are true and the reason is the correct explanation of the assertion, then mark (1).
B. If both Assertion & Reason are true but the reason is not the correct explanation of the assertion, then mark (2).
C. If Assertion is true statement but Reason is false, then mark (3).
D. If both Assertion and Reason are false statements, then mark (4).
