Consider the Oxidation of Sodium Metal to Sodium Oxide Described $\rightarrow$

Consider the oxidation of sodium metal to sodium oxide described by the balanced equation: 4 Na + O₂ $\rightarrow$ 2 Na₂O. What is the theoretical yield of Na₂O in grams from 9.0 mol of O₂?

A) 11 g of Na₂O
B) 410 g of Na₂O
C) 1, 100 g of Na₂O
D) 280 g of Na₂O
E) 560 g of Na₂O