prep08-2-206---（V-ing）在句尾到底能否伴随主系表结构

gui59106375

206. (GWD-13-30)
For the first time in the modern era, non-Hispanic Whites are officially a minority in California, which amounts to a little less than half the population of the state, down from nearly three-quarters only a decade ago.

A.which amounts to a little less than half the population of the state, down from nearly three-quarters only a decade ago

B.which amounts to a little less than half the population of the state, down from a decade ago, when it was nearly three-quarters

C.and that amounts to a little less than half the population of the state, down from a decade ago, when they were nearly three-quarters

D.amounting to a little less than half the population of the state, down from nearly three-quarters a decade ago(D)

E.amounting to a little less than half the population of the state, down from what it was a decade ago by nearly three-quarters

记得在之前看到prep中说Ving是无法在句尾伴随主系表的，但是看到这里的解释D直接困惑了，求大神指点

gui59106375

昨晚看了帖子，发现还是可以伴随主系表结构的，只是这里算不上是一种伴随了，算是一种对于主语的补充，但是V-ing还是无法伴随完成时态的