What is the IP address of Class B$?$

Group of answer choices

$223\mathrm{.}168\mathrm{.}1\mathrm{.}254$

$12,168\mathrm{.}1\mathrm{.}11$

$192,168\mathrm{.}1\mathrm{.}51$

$172\mathrm{.}168\mathrm{.}1\mathrm{.}52$