Discuss how, in choosing the accounting methods below, the following ratios can be affected rate of return on assets, quick ratio, profit margin, asset turnover:

(a) a change in accounting method for depreciation from straight line to reducing balance. (3 Marks)

(b) revaluation of a non-current asset upwards at the beginning of the current year. (3 Marks)

(c) providing for an expected loss through obsolescence of certain items of merchandise inventory. (3 Marks)