I had to check up on the meaning of the crowns too :D
I like C the most out of the 4 choices. Hull should definitely do away with that overcomplicated tiger they have on their current logo for something more stylized like this.
probably shouldve mentioned the three crowns are the emblem/symbol of kingston upon hull. both the rugby teams have them on their badges and city did briefly on an old badge they had.
All not as good as the current badge, the 'overcomplicated' tiger in the current badge is the best badge we have ever had, and we have had a lot of crappy badges. There is no need for change at the club or within the branding, as for B, there are 6 crowns on the crest, unfortunately these are not really up to standard, ditch the crowns and you will be on the right track at least.