`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 , C","Delta , "Al" "," Delta ):}`
C. `{:(I-"Step" , II- "Step" , III- "Step"), (Na_(2)CO_(3)//"air""," Delta , C","Delta , "C" "," Delta ):}`
D. `{:(I-"Step" , II- "Step" , III- "Step"), ("conc." H_(2)SO_(4)"," Delta , NH_(4)Cl","Delta , C"," Delta):}``

Answer

b