In the $Castner-Kellner$ cell for the production of sodium hydroxide,which of the following occurs?

  • A
    Brine is electrolyzed using graphite electrodes.
  • B
    Molten sodium chloride is electrolyzed.
  • C
    Sodium amalgam is formed at the mercury cathode.
  • D
    Brine is electrolyzed with $Pt$ electrodes.

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