Gibson Corporation Inc.s has a retiree health care plan with an attribution period of 25 years and no immediate funding. The employees have on average completed 10 years of service. The Expected Postretirement Benefit Obligation at the beginning and end of the year is $500,000 and $540,000, respectively. The interest rate is 4%. What is the postretirement benefit expense for the company?

a. $29,000

b. $40,600

c. $30,000

d. $29,600

e. $33,600