Which of the following represents a defined-contribution pension plan?_以下哪项代表定额供款养老金计划?_()
A.A pension plan whose benefit formula is 1% of retirement salary for each year of service. (养老金计划,其收益公式为每一服务年限的退休工资的1%。) B.A pension plan into which the employer and employee make regular contributions. (雇主和雇员定期缴纳的养老金计划。) C.A pension plan whose benefit is determined by a formula that takes into account years of service, wages, and salary. (一种退休金计划,其福利由考虑了服务年限,工资和薪水的公式确定。) D.All of the others (以上所有选项)