3. (LO 1) A joint process is used to turn wheat into two different grades of flour. Each of these grades of flour is subsequently refined into a higher-grade type of flour, leaving two high-grade types of flour at the end of all the processing. Describe where the split-off point is in this process, as well as where in the process the joint costs and further processing costs are incurred. Which products should be allocated some of the joint costs? Sketch a diagram to assist with your explanation