Help with computer discussion homework

"Business Costs" Please respond to the following:

• Imagine that you are the head of a department and your organization uses a chargeback funding method. Chargeback systems are popular for managing and controlling IT costs. Determine five IT costs that you would consider to be most critical. Support your reasoning.
• Suppose you were asked to determine a method to compute the operational costs of a company’s ERP (Enterprise Resource Planning) system. From the e-Activity, determine whether you would apply the Activity-based costing (ABC) model or a different model to calculate the costs. Support your rationale. Examine the risks and benefits of applying the model you chose.