Answer question1-4 with specific details thanks!

16-26 Joint-cost allocation, process further. Sinclair Oil & Gas, a large energy conglomerate, jointly processes purchased hydrocarbons to generate three nonsalable intermediate products: ICR8, ING4, and XGE3. These intermediate products are further processed separately to produce crude oil, natural gas liquids (NGL), and natural gas (measured in liquid equivalents). An overview of the process and results for August 2017 are shown here. (Note: The numbers are small to keep the focus on key concepts.) Joint Costs $1,800 Separable Costs ICR8 Processing $175 Crude Oil 150 barrels @ $18 per barrel Hydrocarbons Processing ING4 Processing $105 NGI 50 barrels @ $15 per barrel G Processing $210 Natural Gas 800 eqvt. barrels @ $1.30 per eqvt. barrel A federal law that has recently been passed taxes crude oil at 30% of operating income. No new tax is to be paid on natural gas liquids or natural gas. Starting August 2017, Sinclair Oil & Gas must report a separate product-line income statement for crude oil. One challenge facing Sinclair Oil & Gas is how to allocate the joint cost of producing the three separate salable outputs. Assume no beginning or ending inventory. Required: 1. Allocate the August 2017 joint cost among the three products using the following: a. Physical measure method b. NRV method 2. Show the operating income for each product using the methods in requirement 1. 3. Discuss the pros and cons of the two methods to Sinclair Oil & Gas for making decisions about product emphasis (pricing, sell-or-process-further decisions, and so on). 4. Draft a letter to the taxation authorities on behalf of Sinclair Oil & Gas that justifies the joint-cost-allocation method you recommend Sinclair use