On January 1, 2018, ABC's accumulated post- retirement benefit obligation (APBO) was $3118. During 2018 the following relate to ABC's post- retirement medical plan: retiree benefits paid were $262 service cost was $351 assumptions regarding the trend of future health care costs were revised at the end of 2018, causing the actuary to revise the estimate of the APBO by $-53 (positive number is increase in APBO and negative number is decrease) actuary's discount rate is 8%. On December 31, 2018 ABC's APBO is: Answer: