You have a subnet that contains a computer with the IP address $172\mathrm{.}16\mathrm{.}5\mathrm{.}2/23.$ You need to send a message to every computer on the network where that computer resides. Which subnet is that IP address a member of$,$ and what is the broadcast address for that subnet?

A$)$ subnet: $172\mathrm{.}16\mathrm{.}5\mathrm{.}0,$ broadcast: $172\mathrm{.}16\mathrm{.}5\mathrm{.}255$

B$)$ subnet: $172\mathrm{.}16\mathrm{.}2\mathrm{.}0,$ broadcast: $172\mathrm{.}16\mathrm{.}5\mathrm{.}255$

C$)$ subnet: $172\mathrm{.}16\mathrm{.}0\mathrm{.}0,$ broadcast: $172\mathrm{.}16\mathrm{.}7\mathrm{.}255$

D$)$ subnet: $172\mathrm{.}16\mathrm{.}4\mathrm{.}0,$ broadcast: $172\mathrm{.}16\mathrm{.}5\mathrm{.}255$