Product X-547 is one of the joint products in a joint manufacturing process. Management is considering whether to sell X-547 at the split-off point or to process X-547 further into Xylene. The following data have been gathered: Selling price of X-547 Variable cost of processing X-547 into Xylene. The avoidable fixed costs of processing X-547 into Xylene. The selling price of Xylene. The joint cost of the process from which X-547 is produced. Which of the above items are relevant in a decision of whether to sell the X-547 as is or process it further into Xylene?