How many liters of oxygen gas can be produced at STP from the decomposition of 0.500 L of 3.00 M H₂O₂ in the reaction according to the chemical equation below.
2H₂O₂(1) -> 2H₂O (1) + O₂ (g)

a) 67.2 L
b) 16.8 L
c) 33.6 L
d) 5.60 L