8 0 / 1 point Presented below is pension information related to Aylmer Inc. for the calendar year Y4. Current service costs......................................... $288,000 Interest on accrued benefit obligation............... 216,000 Expected and actual return on plan assets....... 72,000 Past service costs.............................................. 48,000 The pension expense to be reported for Y4 is $648,000 $576,000 $480,000 $432,000