Not yet answered Marked out of $1\mathrm{.}00$

Which of the following is considered broadcast IP $($BC$.$ IP$)$ for a sub$-$network with $/26?$

a$.10\mathrm{.}10\mathrm{.}200\mathrm{.}63$

b$.10\mathrm{.}10\mathrm{.}200\mathrm{.}64$

c$.10\mathrm{.}10\mathrm{.}200\mathrm{.}128$

d$.$ None of the choices

e$.10\mathrm{.}10\mathrm{.}200\mathrm{.}0$