Assertion (A): Minimum stimulus required to open \( \mathrm{P} \) \...

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Assertion (A): Minimum stimulus required to open
\( \mathrm{P} \)
\( \mathrm{Na}^{+} \)VGC as the result of which depolarisation occurs, is
W
called action potential.

Reason (R): Average value of RMP is \( -70 \mathrm{mV} \).
(1) Both \( \mathrm{A} \) and \( \mathrm{R} \) are true and \( \mathrm{R} \) is the correct explanation of \( A \)
(2) Both \( \mathrm{A} \) and \( \mathrm{R} \) are true but \( \mathrm{R} \) is not the correct explanation of \( \mathrm{A} \)
(3) If \( A \) is true but \( R \) is false
(4) If \( \mathrm{A} \) is false but \( \mathrm{R} \) is true
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