Lorin Management Services has an unfunded postretirement benefit plan. On December 31, 2021, the following data were available concerning changes in the plan's accumulated postretirement benefit obligation with respect to one of Lorin's employees: APBO at the beginning of 2021 Interest cost: ($25,000 X 10%) Service cost: ($50,000 x 1/20) Portion of EPBO attributed to 2021 APBO at the end of 2021 $25,000 2,500 2,500 $30,000 Required: 1. Over how many years is the expected postretirement benefit obligation being expensed (attribution period)? 2. What is the expected postretirement benefit obligation at the end of 2021? 3. When was the employee hired by Lorin? 4. What is the expected postretirement benefit obligation at the beginning of 2021? (Round final answer to the nearest whole dollars.) years 1. Number of years 2. Expected postretirement benefit obligation (ending) 3. The employee was hired by Lorin 4. Expected postretirement benefit obligation (beginning) years before 2021