I'm going to repeat what I answered in Discord because I think everyone's having fun with this poll!
Gahh! I'm going to go with B. Dianna Stride because... by all rights... she should KNOW that Clark is Superman... she SAW him in the suit and changing. So... having her double back as a villain could be REALLY scary!
I actually had half a plot bunny that all these villains who SHOULD know might get to talking in prison or something... have some sort of club. (And I think this bunny might already be in the plot bunny sanctuary. 😆 )
Sara