Why DBPs liquidity might be low?
问题如下图：
选项：
A. 
B. 
C. 
解释：
NO.PZ2015121801000006 问题如下 A finebenefit plwith a large number of retirees is likely to have a high neefor A.income. B.liquity. C.insurance. is correct.Income is necessary to meet the cash flow obligation to retirees. Although finebenefit plans have a neefor income, the neefor liquity typically is quite low. A retiree mneelife insurance; however, a finebenefit ples not neeinsurance. 没有流动性怎么会有Income？流动性不就是指现金流吗？
income和liquity怎么区分呢。总感觉不太明白
如果把里面换成另外的话，答案还是选 B吗？
请问老师b为什么不对？有一堆退休人员的benefit plan不是很需要liquity来兑付吗？
为什么不需要保证（c）呢，如果养老金投亏了，是很大很严重的损失啊
