Research the following questions and give authoritative support for your answer. Freddy Flyer, a recent Lamar Accounting graduate, went to work for Universal Airlines. The controller wants to ensure he has an understanding of the appropriate accounting for the company's inventory specifically in the following areas. 1. What is the initial accounting for expendable parts? Does the accounting differ once the expendable parts are used? 2. What is the basis for determining the allowance for obsolescence pertaining to the inventory account? 3. What is the cost basis for reusable spare parts recovered in connection with retirement of property and equipment? 4. What is the appropriate classification of rotable parts of significant value? Does this differ from the classification of expendable parts