--You are leaving your school. How do you like it?

--Very much, of course, I ______ this school since I moved here.[ ]

A. came to

B. have gone to

C. have been to

D. have been at

在CD-I系统中。每个CD-I光盘最多含有99个光道，CD-I光盘按光道信息类型分为2种CD-I光盘，分别为？