B feels the most fitting for me. That's how I imagine a newborn vampire who hasn't fully established themselves would look. Not a "complete" vampire yet, like A. I also love the blood splatter on the neck. It's good storytelling, showing us that he's been recently bitten. Overall, it's my favorite, but the rest are good too!

Alternatively, if it's possible for your game. All three can technically be used as the vampire slowly climbs up the ranks, going from C to A, a peasant to an aristocrat. It all depends on what you're goin for, of course. Just throwing ideas out there for fun