Why is the corridor not being divided by the service years why is it just the ten percent multiplied by the fv of plan assets for question 83

Use the following information for questions 80 through 84 The following information relates to the pension plan for the employees of Polzin Co.: Accumulated benefit obligation Projected benefit obligation Fair value of plan assets AOCI-net (gain) or loss Settlement rate (for year) 65280:00035.520000 8,004,000 5,976,000 5,100,000 6,240,0006,888,000 5,580,000 (864,000) (60,000) Expected rate of return (for year) 1196 8% 11% 7% (Note: AOCI means Accumulated OCI, i.e., the balance of OCl in the Stockholders' Equity section.) Polzin estimates that the average remaining service life is 16 years. Polzin's contrib and benefits paid were $564,000. The interest cost for 2018 is a. $537,840 5974000K,GS7340 80. b. $607,200 $657,360. d. $880,440 81. The actual return on plan assets in 2018 is a. $408,000 $456,000. $588,000. d. $648,000. Page 4 of 82. The unexpected gain or loss on plan assets in 2018 is a. $39,360 loss. b. $22,560 gain. 9 19,200 gain. $214,560 gain. 83. The corridor for 2018 is a. $619,200 $624,000 c. $678,000 d. $800,400 84. The amount of accumulated OCI (net gain) amortized in 2018 is a. $15,300 b. $15,000 c. $11,626. d. $9,977 Ise the following information for questions 86 and 87