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

($ in thousands)	2021 Beginning balances				2022 Beginning balances
Projected benefit obligation	$	(6,700	)		$	(7,204	)
Plan assets		6,400				7,036
Prior service costAOCI		670				640
Net lossAOCI	$	790			$	850

At the end of 2021, Havana contributed $730 thousand to the pension fund and benefit payments of $664 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

• $568 thousand.

• $638 thousand.

• None of these are correct.

• $660 thousand.