Final answer:
The subject of this question is Business, and it is about the amendment of a pension plan and the creation of a prior service cost.
Step-by-step explanation:
The subject of this question is Business and the grade level is High School. The question is about the amendment of a pension plan and the creation of a prior service cost.
When a pension plan is amended, changes are made to the plan's terms and conditions. In this case, the amendment resulted in a prior service cost of $100 million. This cost represents the additional liability incurred due to the changes made.
The service cost and interest cost mentioned in the question are components of the overall pension cost. The service cost, which is $30 million, represents the present value of the pension benefits earned by employees during the year. The interest cost, which is $14 million, is the interest expense accrued on the projected benefit obligation of the pension plan.