Suppose that one address in a block is $13\mathrm{.}3\mathrm{.}3\mathrm{.}127/28.$ What is the last address in that block? $(2$ points$)$

a$.13\mathrm{.}3\mathrm{.}3\mathrm{.}16$

b$.13\mathrm{.}3\mathrm{.}3\mathrm{.}128$

c$.13\mathrm{.}3\mathrm{.}3\mathrm{.}127$

d$.$ None of the above