Which of the following channels should a technician choose when installing multiple wireless access points for a small office home office (SOHO) network to provide the MINIMAL interference?

The 2.4 GHz band has channels spaced 5 MHz apart but each channel is 22 MHz wide, meaning adjacent channels overlap. Only channels 1, 6, and 11 are spaced far enough apart (25 MHz) to be completely non-overlapping. Using these three channels across multiple APs in the same space is the standard best practice to eliminate co-channel interference in a SOHO deployment.

Channels 2, 5, and 10 overlap with each other and with neighboring channels, causing significant co-channel and adjacent-channel interference.

Channels 3, 7, and 9 are not non-overlapping - channel 3 and 7 overlap, and this combination does not follow the 5-channel separation rule.

Channels 4, 5, and 8 are sequential and heavily overlapping, producing maximum interference rather than minimal.