Consider following equation:
`RMP underset{Stimulus}{stackrel{Threshold}{rightarrow}` Opening of `Na^(o+)VGC overset{X}{->}` Action potentil.
Here x refers to-
| A. |
`Na^+` moves from axoplasm to ECF & membrane repolarises |
| B. |
`Na^+` moves from ECF to axoplasm & membrane repolarises |
| C. |
`Na^+` moves from axoplasm to ECF & membrane depolarises |
| D. |
`Na^+` moves from ECF to axoplasm & membrane depolarises |
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