What guideline should be used in determining whether a joint product should be sold at the split-off point or processed further? If the incremental revenue from further processing exceeds the incremental costs of further processing, the product should be processed further. If the incremental costs from further processing exceeds the joint costs, the product should be processed further. O If the incremental costs from further processing exceed the incremental revenue of further processing, the product should be processed further. O If the incremental revenue from further processing exceeds the joint costs, the product should be processed further.