—Would you mind moving over one seat? My daughter and I can sit together.

—________ I'd like to help you.[ ]

A. Of course.  

B. Don't mention it.

C. At your service.  

D. Not in the slightest.

纳税人对由于减免增值税而发生的退税，其已纳城市维护建设税的税务处理是（）

A.同时退税

B.不退税

C.由地税机关确定退税数额

D.由国税机关确定退税数额