The funded status of a company's defined benefit pension plan are provided below. 2021 Ending Balances 2021 Beginning ($ in thousands) Balances Projected benefit obligation $4,000 Plan assets ??? Funded status Net asset of $400 Additional information: Benefits paid, $250 Actual return on plan assets, $376 Discount (interest) rate, 8% $4,501 4,791 ??? There were no changes in actuarial estimates and assumptions regarding the PBO. Required: 1. Determine the beginning plan assets balance. 2. Determine service cost for 2021. 3. Determine employer contributions to the pension fund for 2021. 4. Determine the funded status at the end of 2021. (For all requirements, enter your answers in thousands (i.e. 200,000 should be entered as 200).) 1. Plan assets as of January 1 thousand 2. Service cost thousand 3. Employer contributions thousand 4. thousand