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

Which of the following is considered subnet ID $($SN$.$ ID$)$ for a sub$-$network with $/27?$

a$.10\mathrm{.}10\mathrm{.}200\mathrm{.}192$

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

c$.10\mathrm{.}10\mathrm{.}200\mathrm{.}32$

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

e$.$ Any of the choices