ACC640 problem. Prepare the following problems from the back of the chapter in either a Word document or an Excel File. (Example: Problem 1-36 is problem 36 from the end of chapter 1). Clearly label each problem and be sure to show your work. Numerical answers submitted without supporting documentation will be graded a zero. Excel solutions should be submitted as one file only with the bottom tabs labeled for each problem.Problem 1-36 Ethical challenges, global companyProblem 2-40 Comprehensive unit costs and product costsProblem 3-37 CVP and sensitivity analysisProblem 4-38 Overview of general ledger relationshipsProblem 4-41 Job Costing-Service industry.Horngren, C. T., Datar, S. M., & Rajan, M. V. (2015). Cost accounting: A managerial emphasis (15th ed.). Boston: Pearson