Between A and B....
Depends on how/where you will use them personally.
For me, Tread A would have to suffice, as I dont off road hardly enough to justify Tread B. I have had tread B, and really liked it, when I lived right close to a beach, and a lot of off road driving. But, at least in my PSD, with my heavy right foot, they didnt last long....
Tread A, will still get bite(though not as much as B), and clean out, at least on the sides... while having better road manners.
Tread B is a pretty good MT, that wears fast, and suck in the rain.. at least in my pickup...
Really... I would get A, and keep a hot knife handy to add some extra siping, and maybe remove some tread in some areas if needed...
My 2 cents,
Chase