For the system represented above, O₂ and O₃ initially are 0.15 mol/L and 2.5 mol/L, respectively. Which of the following best predicts what will occur as the system approaches equilibrium at 570 K?
a) Increase in O₂ concentration, decrease in O₃ concentration
b) Decrease in O₂ concentration, increase in O₃ concentration
c) Increase in both O₂ and O₃ concentrations
d) Decrease in both O₂ and O₃ concentrations