The energy change (ΔH) for the reaction CO(g) + (1)/(2)O_2(g) → is?

(ΔHi(CO) = -110.4 kJ mol^-) (ΔHi(CO₂) = -393 kJ mol^-)

• A.-503.7 kJ
• B.+503.7kJ
• C.-282.9 kJ
• D.+282.9 kJ
• E.+393.3 kJ