(b), (c), and ( Could Roundtree have increased Chefe oil. Refining this oil results in four products at the splitoff point: A, B, C, and D. Product C is fully at the splitoff point. Products A, B, and D can be individually further refined into Super A fully process both of its intermediate products? of jaint cost allocation-Advanced. 2. Usefulness The Sunshine Oil Company buys crude vegetable B, and Super D. In the most recent month (December), the output at the splitoff point was Product A Product B Product C Product D 300,000 litres 100,000 litres 50,000 litres 50,000 litres The joint cost of purchasing the crude vegetable oil and processing it was S120,000 Sunshine had no beginning or ending inventories. Sales of product C in December were Total output of products A, B, and D was further refined and then sold. Data related to ber are as follows S60,000. Separable Processing Costs to Make Super Products Sales Super A Super B Super D 5240,000 %,av 108,000 S360,000 120,000 144,000 Sunshine had the option of selling produets A, B, and D at the splitoff point. This alternative would have yielded the following sales for the December production Product A Product B Product D $60,000 36,000 84,000 REQUIRED 1. What is the gross margin percentage for each product sold in December, using the fol methods for allocating the $120,000 joint costs: (a) sales value at splitoff, (b) physical measure, and (c) estimated NRV 2. Could Sunshine have increased is December operating income by making different decisions about the further refining of products A, B, or D? Show the effect on operating income of any changes you recommend