Consider relations $x$ and $Y,$ each representing one of two entities in a many$-$to$-$many binary relationship. Relation $Z$ is the additional relation created to store the many$-$tomany relationship. Intersection data

is stored in relation $x$ or in relation $Y,$ but not in both

must be stored in both relations $x$ and $Y$

is stored in relation $Z$

is stored in all three relations $x,Y,$ and $Z$

cannot be stored in any of relations $x,Y,$ or $Z$