问题

It is in Qingdao _____ you’ re going to pay avisit to ______this kind of washing machine is produced.
A:抄袭的主要原因。
B:抄袭的危害及解决办法。
C:/ ; where
D:that ; which
B:抄袭的危害及解决办法。
C:/ ; where
D:that ; which
正确答案是: