Joint cost allocations are not useful for decision making Mystic Herbals processes exotic plant materials into various fragrances and biological pastes used by perfume and cosmetic firms. One particular plant material, Xubonic root from the rain forest in Australia, is processed yielding four joint products: QV3, VX7, HM4, and L29. Each of these joint products can be sold as is after the joint production process or processed further. The following table describes the yield of each joint product from one batch, the selling prices of the intermediate and further processed products, and the costs of further processing each joint product. The joint cost of processing one batch of Xubonic root is $30,000. QV3 VX7 HM4 L29 Number of ounces per batch 100 80 125 Cost of further processing $2,400 $400 $2,500 $2,800 Selling price of unprocessed intermediate product per ounce $ 62 $ 49 $ 102 $ 47 Selling price of final product after further processing per ounce $85 $57 $ 127 $ 61 195 Required: a. Demonstrate which of the joint products should be processed further and which should be sold without further processing, to maximize firm value. b. Based on your analysis in part (b) regarding the decisions to process further or not, demonstrate whether Mystic Herbals should process batches of Xubonic root into the four joint products? Support your decision with a quantitative analysis and indicate how much profit or loss Mystic Herbals makes per batch