PLEASE HELP THIS IS FOR MY FINAL

Question:
Consider the reaction
2Fe(s) + 30₂(g) → Fe₂O3(s)
If 14.6 g of iron(III) oxide (rust) is produced from a certain amount of iron, how many grams of oxygen are needed for this reaction?

Answers:
4.39g
8.78g
1.95g
2.93g
None of these​