下列反应一定属于非自发进行的是 

C：C₆H₁₂O₆ ( s ) + 6O₂ ( g ) = 6CO₂ (g) + 6H₂O ( l )△H =' -2804' kJ/mol

D：2CO(g)+O₂ (g)=2CO₂(g)△H= －566 kJ/mol

A：N₂(g) + 2O₂(g) = 2NO₂(g) △H =' +' 67.7 kJ/mol

B：CaCO₃(s) ＝CaO(s) ＋CO₂(g) △H =' +' 1921.8 kJ/mol