The following information pertains to Havana Corporation's defined benefit pension plan:

($ in thousands)	2021 Beginning balances				2022 Beginning balances
Projected benefit obligation	$	(6,400	)		$	(6,904	)
Plan assets		6,100				6,736
Prior service costAOCI		640				580
Net lossAOCI	$	760			$	826

At the end of 2021, Havana contributed $735 thousand to the pension fund and benefit payments of $634 thousand were made to retirees. The expected rate of return on plan assets was 10%, and the actuary's discount rate is 8%. There were no changes in actuarial estimates and assumptions regarding the PBO. What is the 2021 pension expense for Havanas plan?

Multiple Choice

• None of these are correct.

• $672 thousand.

• $631 thousand.

• $597 thousand.