Complete the following problems in WileyPLUS. These problems will help you to understand the different types of pension plans, alternative measures for valuing the pension obligation, the components of pension expense, and the amortization of prior service costs. E20-1 E20-7 E20-5 Ch. 20 IFRS MC Question 7 Ch. 20 IFRS MC Question 9 Ch. 20 IFRS MC Question 11