I'd say C, but only because it's the lesser of 3 evils. I try to be nice whenever commenting on peoples artwork as I myself am still learning, but I strongly recommend you take another shot at those. B in particular is in need of some serious rethinking.
I'd recommend playing around with different fonts, maybe something a bit simpler would look nicer. Does your blog have a colour scheme? if so, try to stick to only those colours (1-2 max) in your logo.