In a joint processing operation, Nolen Company manufactures three grades of sugar from a common input, sugar cane. Joint processing costs up to the split-off point total $80,000 per year. The company allocates these costs to the joint products on the basis of their total sales value at the split-off point. These sales values are as follows: raw sugar, $42,000; brown sugar, $28000; and white sugar, $12000. Each product may be sold at the split-off point or processed further. Additional processing requires no special facilities. The additional processing costs and the sales value after further processing for each product (on an annual basis) are shown below: Product Additional Processing Costs Sales Value Raw sugar $ 80000 Brown sugar $ 70000 White sugar $ 82000 Required: a. Compute the Incremental profit (loss) for each product. (Loss amounts should be indicated by a minus sign.) b. Which product or products should be sold at the split-off point?