问题如下图：
选项：
A. 
B. 
C. 
解释：
请问B答案为什么不对？另外想知道C答案在讲义里哪一个部分，好像没有找到。
NO.PZ2018091705000077 问题如下 Marion’s mother, Cornell, is in goohealth age 76, anwomen in her family have generally liveto very olages. Cornell ha pension but es not have muin assets. Therefore, Marion is concernethpotentineefor home care might exceeCornel’s pension ring her finyears. Whiof following type of insuranis most likely to aress Marion’s concern? sability insurance. longevity insurance. long-term care insurance. C is correct. 考点：Health/MecInsurance 解析࿱长期护理保险为家庭护理、辅助生活设施和/或疗养院费用而设计的，比较适合Marion的母亲，尤其是因为她家里有长寿的基因而养老金有不足。虽然这个保险在Marion的母亲这个年龄会比较贵，但这将会缓解家庭护理的潜在需求，为了避免提供家庭护理的财务和心理压力，长期护理保险是最合适的保险选择。 longevity insuran是什么？为什么不选？
NO.PZ2018091705000077 问题如下 Marion’s mother, Cornell, is in goohealth age 76, anwomen in her family have generally liveto very olages. Cornell ha pension but es not have muin assets. Therefore, Marion is concernethpotentineefor home care might exceeCornel’s pension ring her finyears. Whiof following type of insuranis most likely to aress Marion’s concern? sability insurance. longevity insurance. long-term care insurance. C is correct. 考点：Health/MecInsurance 解析࿱长期护理保险为家庭护理、辅助生活设施和/或疗养院费用而设计的，比较适合Marion的母亲，尤其是因为她家里有长寿的基因而养老金有不足。虽然这个保险在Marion的母亲这个年龄会比较贵，但这将会缓解家庭护理的潜在需求，为了避免提供家庭护理的财务和心理压力，长期护理保险是最合适的保险选择。 为什么B 不可以，现在不就是担心母亲活的时间太长，而未来养老金不足以cover
NO.PZ2018091705000077 问题如下 Marion’s mother, Cornell, is in goohealth age 76, anwomen in her family have generally liveto very olages. Cornell ha pension but es not have muin assets. Therefore, Marion is concernethpotentineefor home care might exceeCornel’s pension ring her finyears. Whiof following type of insuranis most likely to aress Marion’s concern? sability insurance. longevity insurance. long-term care insurance. C is correct. 考点：Health/MecInsurance 解析࿱长期护理保险为家庭护理、辅助生活设施和/或疗养院费用而设计的，比较适合Marion的母亲，尤其是因为她家里有长寿的基因而养老金有不足。虽然这个保险在Marion的母亲这个年龄会比较贵，但这将会缓解家庭护理的潜在需求，为了避免提供家庭护理的财务和心理压力，长期护理保险是最合适的保险选择。 请问老师，我能知道长期护理险的大概意思，是作为养老金在年纪非常大的一个补充。因为讲义没有这个知识点，想请老师帮我截图书上的原文，我想再细致读一下。谢谢。
NO.PZ2018091705000077问题如下 Marion’s mother, Cornell, is in goohealth age 76, anwomen in her family have generally liveto very olages. Cornell ha pension but es not have muin assets. Therefore, Marion is concernethpotentineefor home care might exceeCornel’s pension ring her finyears. Whiof following type of insuranis most likely to aress Marion’s concern? sability insurance. longevity insurance. long-term care insurance. C is correct. 考点：Health/MecInsurance 解析࿱长期护理保险为家庭护理、辅助生活设施和/或疗养院费用而设计的，比较适合Marion的母亲，尤其是因为她家里有长寿的基因而养老金有不足。虽然这个保险在Marion的母亲这个年龄会比较贵，但这将会缓解家庭护理的潜在需求，为了避免提供家庭护理的财务和心理压力，长期护理保险是最合适的保险选择。 这道题在基础班讲义第几页？
NO.PZ2018091705000077问题如下 Marion’s mother, Cornell, is in goohealth age 76, anwomen in her family have generally liveto very olages. Cornell ha pension but es not have muin assets. Therefore, Marion is concernethpotentineefor home care might exceeCornel’s pension ring her finyears. Whiof following type of insuranis most likely to aress Marion’s concern? sability insurance. longevity insurance. long-term care insurance. C is correct. 考点：Health/MecInsurance 解析࿱长期护理保险为家庭护理、辅助生活设施和/或疗养院费用而设计的，比较适合Marion的母亲，尤其是因为她家里有长寿的基因而养老金有不足。虽然这个保险在Marion的母亲这个年龄会比较贵，但这将会缓解家庭护理的潜在需求，为了避免提供家庭护理的财务和心理压力，长期护理保险是最合适的保险选择。 可以这样根据关键词选择吗？如果提到了年龄大和需要family care选long term care insurance如果只是单纯说年龄大选longevity insurance.另外，年龄大的时候也会因为高龄而失能无法自理，这种情况是不是也可以用失能险？还是说失能险只适用于残疾，不适用于年龄大的生活无法自理？谢谢老师
