过氧化钠具有强碱性和强氧化性，遇木炭、铝粉等还原性物质时可燃烧。下列有关说法中不正确的是                                                                                                              （   ）

A．Na₂O₂与木炭的反应是放热反应

B．熔融Na₂O₂时可使用石英器皿

C．Na₂O₂与Al反应时Na₂O₂表现出强氧化性

D．Na₂O₂与SO₂反应可生成Na₂SO₄

Clouds are gathering. I think we'd better head for the school ________ it starts to rain. 　　[ ]

A. so that 　　　

B. in order　　　

C. in case of　　　

D. in case