Budgetary slack is a drawback of which approach to budgeting? a) Top-down budgeting b) Participative budgeting c) Rolling budgeting d) Authoritative budgeting Which of the following is an example of avoidable fixed costs? a) Rent on the manufacturing plant b) Lease on machines used for a particular product c) Salary of product line manager d) Both (b) and (c) are correct