Iron Metal Reacts with Oxygen to Produce Iron(III)oxide

Multiple Choice

Iron metal reacts with oxygen to produce iron(III) oxide.If you have 12.0 moles of iron for complete reaction,you need:

A) 9.0 moles of O₂ and produce 3.0 moles of Fe₂O₃.
B) 12.0 moles of O₂ and produce 24.0 moles of Fe₂O₃.
C) 9.0 moles of O₂ and produce 6.0 moles of Fe₂O₃.
D) 4.5 moles of O₂ and produce 3.0 moles of Fe₂O₃.
E) none of the above