`FeCr_(2)O_(4)(` chromite `)` is converted to `Cr` by following steps `:`
Chromite `overset(I)rarrNa_(2)CrO_(4)overset(II)rarrCr_(2)O_(3)overset(III)rarr Cr`
Reagents in `I,II,` and `III` step might be `:`

Options

A. `{:(" ""I-Step","II-Step","III-Step"),(Na_(2)CO_(3)//"air,"Delta," "C," "C):}`
B. `{:(" ""I-Step","II-Step","III-Step"),(NaOH//"air,"Delta," "CDelta," AlDelta):}`
C. `{:(" ""I-Step","II-Step","III-Step"),(Na_(2)CO_(3)//"air,"Delta," "CDelta," "CDelta):}`
D. `{:(" ""I-Step","II-Step","III-Step"),(conc.H_(2)SO_(4)Delta," "NH_(4)ClDelta," "CDelta):}`

Answer

B

Explanation

Chromite `overset(NaOH//"air",Delta) to NaCrO_(4) overset(C,Delta)to Cr_(2)O_(3) overset(Al,Delta) to Cr`