问题如下：
The participant bears the greatest amount of investment risk under which plan?
选项：
A. Plan A
B. Plan B
C. Plan C
解释：
B is correct.
Plan B is a defined contribution (DC) pension plan because the amount of future benefit is not defined and SKI has an obligation to make only agreed-upon contributions. The actual future benefits depend on the investment performance of the individual’s plan assets, and the employee bears the investment risk.
A is incorrect because Plan A is a defined benefit (DB) pension plan. In a DB plan, the amount of future benefit is defined based on the plan’s formula (i.e., 1% of the employee’s final salary for each year of service). With a DB pension plan, SKI bears the investment risk.
C is incorrect because Plan C is a health care plan and is classified as a DB plan. Under IFRS and US GAAP, all plans for pensions and other post-employment benefits (OPB) other than those explicitly structured as DC plans are classified as DB plans. The amount of future benefit depends on plan specifications and type of benefit, and it represents a promise by the firm to pay benefits in the future. SKI, not the employee, is responsible for estimating future increases in costs, such as health care, over a long time horizon.
老师，题干中70% of the participants are fully vested 是说70%的养老金参与者已经满足了限制要求吗？