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Which one is not correct about the react...

Which one is not correct about the reaction :
`FeS_2 + O_2rarrFe_2O_3+SO_2`

A

Eq. weight of `FeS_2` is M/11

B

Eq. wt of `SO_2=M//5`

C

1 mole of `FeS_2` requires 7/4 mole of `O_2`

D

S has `-2` oxidation state in `FeS_2`

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The correct Answer is:
A, B, C
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