Allocating Service Department Costs [LO 1] World Airlines has three service departments: (1) ticketing, (2) baggage handling, and (3) engine maintenance. The service department costs are estimated for separate cost pools formed by department and are allocated to two revenue-producing departments: (1) domestic flights and (2) international flights. World does not differentiate between fixed and variable costs in making allocations. The following data relate to the allocations: a Allocate the service department costs to the revenue-producing departments using air miles as the allocation base. b. Evaluate the cause-and-effect relationship resulting from the use of air miles as the allocation base. In which of the cost pools do you think the cause-and-effect relationship is the strongest? Suggest alternative allocation bases for the two remaining cost pools with the weakest cause-and-effect relationship