A survey was carried out on the death rate of new-born babies in that region, ________ were surprising.
问题描述：
A survey was carried out on the death rate of new-born babies in that region, ________ were surprising.
A. as results
B. which results
C. the results of it
D. the results of which
请翻译一下
答
一个关于新生婴儿死亡率的报告出炉,其结果让人吃惊
我选 D