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.

1. which amounts to a little less than half the population of the state, down from nearly three-quarters only a decade ago
2. which amounts to a little less than half the population of the state, down from a decade ago, when it was nearly three-quarters
3. 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
4. amounting to a little less than half the population of the state, down from nearly three-quarters a decade ago
5. amounting to a little less than half the population of the state, down from what it was a decade ago by nearly three-quarters

这题答案给的是D，但小妹觉得应该是E。D虽然比E更简洁，但D的逻辑有问题，最后一个逗号以后要表达的意思是"比十年前降低了3/4"，表示降低了多少一定要用by，而且from之后跟nearly three quaters，翻译过来就是“从十年前的3/4降低了“,这明显不通顺，而E虽然长，但意思表达得很清楚 - ‘从what it was a decade ago降低了3/4‘。

不知道各位哥哥姐姐有什么看法？

但是从句意上，还是D合适。现在占的比例是比一半略低一点，以前是占到四分之三。

如果选E的话，降低了四分之三，那以前的比例得多大阿，似乎不符合数学常识。