Concord Company sponsors a defined benefit pension plan. The corporation's actuary provides the following information about the plan. January 1, 2020 $1,620 1,780 2,550 1,650 December 31, 2020 $1,780 2,720 3,450 2,800 Vested benefit obligation Accumulated benefit obligation Projected benefit obligation Plan assets (fair value) Settlement rate and expected rate of return Pension asset/liability Service cost for the year 2020 Contributions (funding in 2020) Benefits paid in 202- 10 % 900 390 680 180 (a) Compute the actual return on the plan assets in 2020. Actual return on the plan assets $ 650 (b) Compute the amount of the other comprehensive income (G/L) as of December 31, 2020. (Assume the January 1, 2020, balance was zero.) (Enter loss using either a negative sign preceding the number e.g.-45 or parentheses e.g.(45).) Net pension liability gains and losses $ 390 (c) Compute the amount of net gain or loss amortization for 2020 (corridor approach). Net gain or loss amortization $ 150 (d) Compute pension expense for 2020. Pension expense $ 480