Answer
$A'\cup C=${Acme,Brothers,Crafts,Dion,Effigy,Floyd,Global,Hilbert}
Work Step by Step
The subset described can be put in a form $A'\cup C$
$A'$={Brothers,Dion,Floyd,Hilbert}
$A'\cup C=${Acme,Brothers,Crafts,Dion,Effigy,Floyd,Global,Hilbert}