求问，关于controversy的用法，求答疑

沙丁鱼soap

在KM上看到了一道题：Modem research has not yet resolved the controversy 【over if viruses are living things】, a debate arising from the fact that they cannot reproduce themselves independently.

正确答案是：over whether viruses are living things
我选择的答案是：about whether viruses are living things

争论点主要集中在over 和about上边，查了下字典，发现controversy：(over/about/surrounding somebody/something) public discussion and argument about something that many people strongly disagree about, disapprove of, or are shocked by

所以既然能够跟over和about，那么为什么在这里over要比about的用法更合适呢？

求答疑，非常感谢。

沙丁鱼soap

有人吗？