Intermediate accounting homework please help a couple of questions attached below. Thank you!

INTERMEDIATE ACCOUNTING Payment of retirement benefits Increases the PBO Increases the ABO Reduces the GBO Reduces the PBO Interest cost will: Increase the PBO and increase pension expense Increase pension expense and reduce plan assets. Increase the PBO and reduce plan assets Increase pension expense and reduce the return on plan assets Amortization of net loss will have no effect on an employer's period pension expense in the year the event occurs. True False Service costs will have no effect on an employer's period pension expense in the year the event occurs. True False Changes in actuarial assumptions for a defined benefit pension plan would be a change in estimate. True False Excess of the expected return on plan assets over the actual return will have no effect on an employer's period pension expense in the year the event occurs. True False