The following information pertains to Lavana Corporation's defined benefit pension plan:
($ in 000s)	2018	2019
	Beginning Balances	Beginning Balances
Projected benefit obligation	($6,000)	($6,504)
Plan assets	5,760	6,336
Prior service costAOCI	600	552
Net lossAOCI	720	786

At the end of 2018, Lavana contributed $696,000 to the pension fund and benefit payments of $624,000 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's the 2018 service cost for Lavana's plan?

A. $528,000

B. Can't be determined from the given information

C. $276,000

D. $648,000