What is the subnetwork address for a host with the IP address $200\mathrm{.}10.\frac{5\mathrm{.}168}{28}?$

A $O200\mathrm{.}10\mathrm{.}5\mathrm{.}0$

B $200\mathrm{.}10\mathrm{.}5\mathrm{.}255$

C $200\mathrm{.}10\mathrm{.}5\mathrm{.}156$

D $,200\mathrm{.}10\mathrm{.}5\mathrm{.}132$

E $,$ O $,200\mathrm{.}10\mathrm{.}5\mathrm{.}160$