Classified Electronics has an unfunded retiree health care plan. Each of the company's three employees has been with the firm since its inception at the beginning of 2020 . As of the end of 2021 , the actuary estimates the total net cost of providing health care benefits to employees during their retrement years to have a present value of $72,000. Each of the employees will become fully eligible for benefits after 28 more years of service but aren't expected to retire for 35 more years. The interest rate is 6%. Required: 1. What is the expected postretirement benefit obligation at the end of 2021 ? 2. What is the accumulated postretirement benefit obligation at the end of 2021 ? 3. What is the expected postretirement benefit obligation at the end of 2022 ? 4. What is the occumulated postretirement benefit obligation at the end of 2022