Big Bad Accountants Inc. provides its employees with a defined benefit pension plan, details of which follow: Pension obligation, December 31, 2025 Plan assets December 31, 2025 Discount rate used in actuarial assumptions Current service cost for the year. - end of year $7,000,000 $5,900,000 4% $590,000 Past service cost- accrued at the beginning of the year Jan 1, 2026 Actuarial gain due to a change in assumption Actual return on plan assets Contributions remitted to pension trustee-evenly throughout year Payments to retirees- evenly throughout year What is the net amount that will be charged to pension expense for December 31, 2026 year end? $694,000 $623,000 $683,000 $644,600 $60,000 $0 $275,000 $670,000 $640,000