下列反应中符合下图图像的是

A．N2(g) + 3H2(g) 2NH3(g) ΔH =－Q1 kJ·mol^-1 (Q1＞0)

B．2SO3(g) 2SO2(g) + O2(g)ΔH =" +" Q2 kJ·mol^-1 (Q2＞0)

C．4NH3(g) + 5O2(g) 4NO(g) + 6H2O(g)ΔH =－Q3 kJ·mol^-1 (Q3＞0)

D．H2(g) + CO(g) C(s) + H2O(g)ΔH =" +" Q4 kJ·mol^-1 (Q4＞0)