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Consider the following statements in the...

Consider the following statements in the extraction of iron from haematite:
(I) `CO`is the main reducing agent
(II) `Fe_(2)O_(3)`is used to oxidise the impurities be Bessemer process
(III) In basic oxygen process, air is used to oxidise the impurities.
(IV) When air is used to oxidise the impurities, iron nitride is formed in iron
Pick the correct set of statement `(s)`:

A

`SiO_(2) " and " SiO_(2)`

B

CaO and CaO

C

`SiO_(2)` and CaO

D

CaO and `SiO_(2)`

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