CH₄的燃烧热为890 kJ/mol.下列热化学方程式正确的是 [ ]

A．CH₄(g)＋2O₂(g)―→CO₂(g)＋2H₂O(l) ΔH＝＋890 kJ/mol

B．CH₄＋2O₂―→CO₂＋2H₂O　ΔH＝－890 kJ/mol

C．CH₄(g)＋2O₂(g)―→CO₂(g)＋2H₂O(l) ΔH＝－890 kJ/mol

D．CH₄(g)＋2O₂(g)―→CO₂(g)＋2H₂O(g) ΔH＝－890 kJ/mol