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.
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.
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