P17-20 Shown below is the retiree health care plan for Waleska Industries 2018 Beginning Balances 460 2018 Ending Balances 485 ($ in thousands) Accumulated post retirement BO Plan assets Funded status 75 (460) (410) 110 Prior service cost - AOCI Net gain - AOIC 120 (50) (49) Waleska began funding the plan in 2018 with a contribution of $127,000 to the benefit fund at the end of the year. Retirees were paid $52,000. The actuaries discount rate is 5%, There were no changes in estimates and assumptions. ($ in 000's) Determine the following: 1. Service cost: APBO: Beginning of 2018 End of 2018 Service cost....... 2. Post retirement benefit expense: Amortization of: Post retirement benefit expense 3. Net benefit liability: Net PRBO