code class$=$"asciimath"$>$ points$($A$$B$)$C$,$A$$C $($b$)$ Which of the following is the best way to sum up the relationship of the two sets in part $($a$)?$: $($A$)($A$$B$)$CsubeA$$C $($B$)($A$$B$)$C$=$A$$C $($C$)($A$$B$)-$CsupeA$-$C $($D$)($A$-$B$)-$C$!=$A$-$C