Select the correct sequence of statements regarding the conduction of a nerve impulse and select the correct option given below.
$i.$ Rapid influx of $Na^{+}$ inside the axon.
$ii.$ $Na^{+}$ gates are closed and $K^{+}$ gates open after the refractory period.
$iii.$ Intracellular fluid is electronegative and the potential difference is $-70 \ mV$.
$iv.$ Extracellular fluid becomes electronegative.
$v.$ Disturbance to the resting potential.

• A
  $ii \rightarrow v \rightarrow i \rightarrow iv \rightarrow ii$
• B
  $v \rightarrow ii \rightarrow i \rightarrow iii \rightarrow iv$
• C
  $i \rightarrow iii \rightarrow iv \rightarrow v \rightarrow ii$
• D
  $iv \rightarrow v \rightarrow i \rightarrow iii \rightarrow ii$