Given the following classless IP address and subnet mask, find the network address, the address of the first host, and the directed broadcast address for the network.$|$

a$.212\mathrm{.}42\mathrm{.}167\mathrm{.}212,255\mathrm{.}255\mathrm{.}0\mathrm{.}0$

b$.208\mathrm{.}102\mathrm{.}187\mathrm{.}92,255\mathrm{.}255\mathrm{.}255\mathrm{.}0$

c$.174\mathrm{.}25\mathrm{.}215\mathrm{.}148,255\mathrm{.}255\mathrm{.}254\mathrm{.}0$

d$.112\mathrm{.}102\mathrm{.}92\mathrm{.}167,255\mathrm{.}255\mathrm{.}255\mathrm{.}192$