A network administrator is setting up a Wi$-$Fi network in a small office building. The building is equipped with three access points $($APs$)$ to ensure complete coverage. The administrator wants to minimize channel overlap and interference in the $2\mathrm{.}4$ GHz band.

Which of the following channel configurations should the administrator use for the APs?

answer

AP$1$: Channel $1,$ AP$2$: Channel $6,$ AP$3$: Channel $11$

AP$1$: Channel $1,$ AP$2$: Channel $2,$ AP$3$: Channel $3$

AP$1$: Channel $1,$ AP$2$: Channel $3,$ AP$3$: Channel $5$

AP$1$: Channel $3,$ AP$2$: Channel $6,$ AP$3$: Channel $9$