There was a chance in a million that she might be right. Which of the following phrases can be used to replace “a chance in a million”?[ ]

A. the scarcest chance

B. the greatest chance

C. the remotest chance

D. the lightest chance

新系统进行气密检查的对象是（）。

A.所有焊缝

B.所有法兰

C.所有与管道相连的法兰及设备法兰

D.所有连接的管道法兰及焊缝