Which statement is correct regarding the slag formed during the extraction of copper or iron?

  • A
    Slag is lighter and has a higher melting point than the metal.
  • B
    Slag is lighter and has a lower melting point than the metal.
  • C
    Slag is heavier and has a higher melting point than the metal.
  • D
    Slag is heavier and has a lower melting point than the metal.

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