Identify the correct statement from the following:

  • A
    Pig iron can be moulded into a variety of shapes.
  • B
    Wrought iron is impure iron with $4 \%$ carbon.
  • C
    Blister copper has blistered appearance due to evolution of $CO_2$.
  • D
    Vapour phase refining is carried out for Nickel by Van Arkel method.

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