INT $3203-$ Computer Network

You are configuring a wireless local area network $($WLAN$)$ with three wireless access points having overlapping coverage areas. The wireless access points are using the $2\mathrm{.}4GHz$ frequency band, and are located in the United States. What three non$-$overlapping channels in the $2\mathrm{.}4GHz$ band should you select?

A $14$

B $15$

$1$

D

$6$

E

$11$