A computer bus needs to distribute a data signal to $8$ different memory chips. Which demultiplexer configuration would be most appropriate?

$$ a$.1-$to$-2$ demultiplexer

$$ b$.1-$to$-16$ demultiplexer

$$ c$.1-$to$-4$ demultiplexer

$$ d$.1-$to$-8$ demultiplexer