Show the nature of each of the situations described below using the following descriptions (you can choose one description multiple times). Technological advance that renders worthless a patent with an unamortized cost of $45,000. Change in principle reported prospectively a. Change from LIFO inventory costing to average inventory costing. b. Change in estimate Change in principle reported retrospectively C. Including in the consolidated financial statements a subsidiary A acquired several years earlier that was appropriately not included in previous years. d. Change in reporting entity Change from FIFO inventory method to LIFO