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Which type of relationship should an administrator use to ensure that expense line items can be aggregated? B. Master-detail The question is "Which type of relationship"? Roll-up Summary is a feature of the Master-Detail relationship.
D. Roll-up summary The roll-up summary relationship type should be used to aggregate values from expense line item records and display them on the expense record. The roll-up summary field can perform calculations on child records and display the result on the parent record.
hey, the roll up is a type of field. What you need is the type of relationship, in this case, Master Detail. Why? Because if you delete de Expense, you delete all the Expense lines that depends on the parent Expense. Expense line isolated has no sense here.