Consider the following statements, about extraction of copper.I. The sulphide ores of Cu are heated in ... A... furnace.II. If the ore contains Fe, it is mixed with . . . B .. . before heating.III. Iron oxide . . . C.. . as iron silicate and Cu is produced in the form of copper matte which contains cu, S and ...D....IV. FeO+SiO2⟶…E…                          (Slag) Fill up the missing words (A, B, c, D and E) from the following options.