Your boss has asked you to connect three new laptops to the wireless network "WLAN$42."$ It runs at a speed of $54$ Mbps only and a frequency of $2\mathrm{.}4$ GHz only. What IEEE $802\mathrm{.}11$ standard should you implement when connecting the laptops to the WAP?

$802\mathrm{.}11$a

$802\mathrm{.}11$b

$802\mathrm{.}11$g

$802\mathrm{.}11$n