已知：2CO(g)＋O₂(g)===2CO₂(g)；ΔH＝－566 kJ·mol^－1
N₂(g)＋O₂(g)===2NO(g)；ΔH＝＋180 kJ·mol^－1
则2CO(g)＋2NO(g)===N₂(g)＋2CO₂(g)的ΔH是(　　)

A．－386 kJ·mol^－^1	B．＋386 kJ·mol^－^1
C．－746 kJ·mol^－^1	D．＋746 kJ·mol^－^1