Dhysical measure allocation and sell or process further for processing Grade B lumber after split-off. a. How much joint cost should be allocated to Gade A and to Grade 8 lumber using the physical units method? Grade As Crade Bs 6. 1. if Grade A lumber a processed further and then sobd, what is the incremental effect on Orezon forecs' net income? Processine forther wil result in an 2 Should the additional processing be performed