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？（）

• A、Install a TV tuner card that supports high-definition TV （HDTV）.
• B、Install an additional TV tuner card.
• C、Contact your TV cable or satellite provider to add support for concurrent recording.
• D、Remove the existing TV tuner card. Install a new TV tuner card that supports MPEG-2 video hardware or software video decoding.