As part of the year-end accounting processing review of operating policies, Cullen Co. is considering a change in accounting for its equipment from the straight-line method to an accelerated method. Your supervisor wonders how the company will report the change in principle. He read in the newspaper article that FASB has issued a standard in this area and has changed GAAP for a "change in estimate" that is effected by a change in accounting principle. (Thus the accounting may be different from what he learned in intermediate accounting). Your supervisor wants you to research the authoritative guidance on a change in accounting principle related to depreciation methods. a. What are the accounting and reporting guidelines for a change in accounting principle related to depreciation? b. What are the conditions that justify a change in depreciation method,as contemplated by Cullen Co.? c. What guidance does the SEC provide concerning the impact that recently issued accounting standards will have on the financial statements in future periods? (Please provide the code sections and subtopics).