To represent a one$-$to$-$many relationship in a relational database design $($A$)$ the key of the child is placed as a foreign key into the parent $($B$)$the key of the parent is placed as a foreign key into the child $($C$)$ an intersection table must be created $($D$)$the key of the table on the "many" side is placed in the table on the "one" side $($E$)$the keys of both tables are joined into a composite key