Absolutely we were agreed that all three options were fine for you to pick.
So if you’re good, you had the bad luck to choose someone we are now certain is evil. That’s a 1/3 chance.
If you’re evil, there wasn’t a choice, you just pretended to randomise and chose a certainty.
So while it wasn’t suspicious at all at the time, it’s looking a lot more likely to be indicative now we have the information that Dave is evil.