Which of the following statements concerning the folowing system at equilibrium is true? 2CO(g) + O2(g) ? 2CO2(g) ; Keq=2×1011 A. The equilibrium solution contains predominantly CO2. B. The equilibrium solution contains equal amounts of CO, O2, and CO2. C. The reaction is very fast, due to the high value for Keq. D. The equilibrium lies to the left. E. The equilibrium system contains almost twice as many reactant molecules as product molecules.