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07. How can you define a variable that displays its value help organized as a hierarchy?There are 2 correct answers to this question.a) Create a parent-child hierarchy and assign it to the variable.Ensure the variable's reference column is the child attribute of the hierarchy.b) Create a parent-child hierarchy and assign it to the variable.Ensure the variable's reference column is the parent attribute of the hierarchy.c) Create a level hierarchy and assign it to the variable.Ensure the variable's reference column is the leaf level of the hierarchy.d) Create a level hierarchy and assign it to the variable.Ensure the variable's reference column is the top level of the hierarchy.
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