S$4.$ Convert the following binary number $($signed $32-$bit

floating point IEEE$-754)$ into decimal:

$01000000000000000000000000000000$

a$)1\mathrm{.}0$ b$)2\mathrm{.}0$ c$)3\mathrm{.}0$ d$)4\mathrm{.}0$ e$)$ none of these