!!20 Points!!
Use the chemical equation to answer the question.


WO3(s) + 3H2(g) → W(s) + 3H2O(g)


Which statement correctly describes the reaction?



Tungsten (W) changes oxidation numbers from +6 to zero, so it undergoes oxidation.


Oxygen (O) changes oxidation numbers from –2 to zero, so it undergoes oxidation.


Oxygen (O) changes oxidation numbers from –2 to zero, so it undergoes reduction.


Tungsten (W) changes oxidation numbers from +6 to zero, so it undergoes reduction.