Question $7$

Which three Wi$-$Fi standards operate in the $2\mathrm{.}4GHz$ range of frequencies? $($Choose three.$)$

$802\mathrm{.}11a$

$802\mathrm{.}11b$

$802\mathrm{.}11g$

$802\mathrm{.}11n$

$802\mathrm{.}11ac$