You install a TV tuner card on your computer. You need to record two different TV shows that run on two different channels at the same time. What should you do？（）
- AInstall a TV tuner card that supports high-definition TV （HDTV）.
- BInstall an additional TV tuner card.
- CContact your TV cable or satellite provider to add support for concurrent recording.
- DRemove the existing TV tuner card. Install a new TV tuner card that supports MPEG-2 video hardware or software video decoding.