employee、attendee和retiree中的后缀-ee都表示动作的受动者含义。

What is the pension expense for the following plan?“The plan requires the company to contribute $500 for each of its 1,000 employees. The plan hopes to accumulate enough funds so that each retiree receives $20,000 in the future; the company has no obligation to guarantee the investment returns." A: $500 B: $20,000 C: $500,000 D: $20,000,000