In the 5 GHz WiFi band, there are typically non-overlapping channels available that can be used for WiFi connections. The most commonly referenced channels in the United States are:
- Channels 36, 40, 44, and 48 (low-band channels)
- Channels 149, 153, 157, and 161 (high-band channels)
In total, this gives us 8 non-overlapping channels in the 5 GHz band. However, considering the possible choices given in your question, if you're asking for overlapping channels, the answer would be 0, because the channels do not overlap in the same way that they do in the 2.4 GHz band.
So, the correct answer from the provided options is 0.