Hmmm, I was going for A until you turned it. Then I picked B What appeals to me is the opposite orientation to the layout. That is, if the quilt is to be hung vertically, I like the bars across the top row to be horizontal. If the quilt is to be hung horizonally, I prefer the top row of bars to be vertical.
If it's to be a lap quilt (in which case it'd be used "vertically" ), then A.