It is raining hard outside, _________ we have to cancel the meeting．

It is raining hard outside, _________ we have to cancel the meeting．

A.in case

B.in which case

C.in that case

D.in case of

答案及解析： B

解析：

which是关系代词，引导一个非限制性定语从句，in which case意为“在这种情况下”。