To what subnet does a host with the IP address $172\mathrm{.}16\mathrm{.}155\mathrm{.}10/18$ belong?

A $,172\mathrm{.}16\mathrm{.}0\mathrm{.}0/18$

B $,172\mathrm{.}16\mathrm{.}154\mathrm{.}0/18$

C $O,172\mathrm{.}16.\frac{128\mathrm{.}0}{18}$

D $,172\mathrm{.}16\mathrm{.}96\mathrm{.}0/18$