I'm concerned about the amount of people in this post that aren't just saying that None is the correct answer, but are instead trying to come up with a race to pick.
I was once among a group of (fellow) university-educated expats, during a stint living abroad in the 2000s. While we were socializing, somebody asked everyone to say what group of people they would make disappear. (I can't remember if it was kill/erase/nuke/remove from a map that was said, but a couple of variations along those lines.) People's answers that day (and their insistence that I, too, should "jokingly" hate some group of people and want them to die) taught me a lot. On top of that, I also am part of one of the groups that was named (no, I am not mixed race-- it was just ignorance on the guy's part that he not only thought I wasn't part of the group but also that when I made a "joke" of what he said, he thought telling me that I didn't seem like part of that group was supposed to make it better somehow).
It's an option, but if "none" wins then there's no shared knowledge of anything. The question really is, do you prefer to cause genocide but have new tech, or keep old tech with no genocide.