A warm scarf for your head would be better than gloves/mittens. You can always put your hands under your arms to keep them warm. But your head needs to be warm. I'm assuming that you also have a coat, socks, boots etc.
Oh, I didn't see your options so I picked a mansion to stay warm in. LOL I think I'll take the hat though. Having a warm head helps a lot, my hands can go in my jacket pockets and my neck will be warm by my jacket too.
But of coarse if I could have both then I would...