How many valid host addresses are available on the network $172\mathrm{.}16\mathrm{.}128\mathrm{.}0$ with a subnet mask of $255\mathrm{.}255\mathrm{.}252\mathrm{.}07$

$$ a$.510$

$$ b$\mathrm{.}512$

$0$ c$.2046$

$$ d$.1024$

$0$ e$.1022$

O f$.2048$