A and B, no doubt. Although, I have to say, the person who came up with C and D must have been having a really bad day. Or maybe they were just trying to be funny.
Yes, creating a parent-child hierarchy and assigning it to the variable with the reference column as the parent attribute is crucial for hierarchical data.
Cecil
8 months agoCassie
8 months agoZana
7 months agoRossana
7 months agoJeffrey
7 months agoSilva
8 months agoMyrtie
7 months agoOwen
8 months agoAnnelle
8 months agoCristal
9 months agoThaddeus
8 months agoSolange
8 months ago