一台多媒体计算机是在普通计算机上添加_____，再配置支持多媒体功能的操作系统即可构成。A multimedia computer consists of adding___ to an ordinary computer an operating system that supports multimedia functions. A: 激光打印机，声卡和扫描仪Laser Printers, Sound CARDS, and Scanners; B: 绘图仪、光驱和音响Plotters, Optical Drives, and Sound Systems; C: 声卡、视频卡和光驱Sound Card, Video Card, and Optical Drive; D: 声卡和音响Sound Card and Audio;