a. Using a work sheet, calculate defined benefit expense for the year 2023, and provide the entries to recognize the expense and contributions for the year assuming that Yorke has chosen the funding measure of its defined benefit obligation as its accounting policy choice. b. Discuss what adjustments would need to be made to your calculations and entries in part (a) if Yorke's accounting policy choice was the accounting measure of its defined benefit obligation. c. Calculate defined benefit expense if IFRS had been applied to this plan. Comment on any difference between this expense and the defined benefit expense calculated in part (b)