Which of the below costs are NOT relevant to the decision of providing a service internally versus outsourcing the service? 1. administrative costs that would be eliminated if the service was outsourced, 2. payroll for the employee that provides the service if her position would be elimated if the service was oursourced, 3. administrative costs that would not be eliminated if the service was outsourced, 4. the cost of purchasing the service from an external supplier