Bug with the survey

So while taking your survey that you sent out around yesterday, I noticed that one of the questions was asking me to identify which specific champions fit into a which factions, and gave me an option of i don't know or independent. Now I'm not sure if this was suppose to happen or not, but my only choices when answering the question were either independant or I don't know. Now while this isn't a huge priority, I was wondering if something was off about the question. I take pride in knowing quite a bit lore wise about leauge, and I felt like I was in a math test and caluclated what I was 100% sure what the answer was only to find out my answer wasn't one of the choices. It's no ones fault really, but I did try to give you the most accurate answers I could, and now becuase of what I have thought is a bug, I feel as if my data is unuseable in some way. Let me know if it was a bug or I'm just crazy.