—Look at the wall. There are some pictures ______ it.

—And there are two windows ______ it. [ ]

A. on; on

B. in; on

C. on; in

D. in; in

哪个是在datastation上做的操作（）。

A.配置数据源

B.导入license文件

C.新建几个入库任务

D.以上不不对