Question $26(2$ points$)$

Steve, an entrepreneur, is setting up his Internet startup company on a small farm in a rural area to take advantage of the low power costs. The office building is a rectangular area that diagonally measures $60$ meters. Steve plans to install a central wireless router that can provide Internet access from any point inside the office. The business operation requires high Internet speeds up to $1G\frac{b}{s}$ and security protocols. Which of the following wireless standards would best serve Steve's requirements?

$802\mathrm{.}11$b

$802\mathrm{.}11$ a

$802\mathrm{.}11$ ac

$802\mathrm{.}11g$