need help solving. thank you

After implementing activity-based costing to estimate customer-level technical support costs, ABC Company found that customer X is unprofitable. What are reasonable ways to deal with this customer? (select ALL correct answers) charge the customer a higher price per unit (assume that you can charge different customers different prices for the same product or service) trick question -- it is impossible to estimate customer-level profitability O if nothing else works, "fire" the customer limit the number of free technical-support calls per customer charge a fee per technical support call