Nitric Oxide,NO,is Made from the Oxidation of NH₃,and the Reaction $\to$

Nitric oxide,NO,is made from the oxidation of NH₃,and the reaction is represented by the equation: 4NH₃ + 5O₂ $\to$ 4NO + 6H₂O
What mass of O₂ would be required to react completely with 6.85 g of NH₃?

A) 4.56 g O₂
B) 10.3 g O₂
C) 8.04 g O₂
D) 16.1 g O₂
E) 12.9 g O₂