Many folks like to have the batteries all facing the same way, to avoid confusion, and then wire between them. I prefer to alternate them 180 degrees within each series string - this is what you have in "B" - it makes for shorter jumpers.
In your sketch the batteries in each series string are nearly a battery length apart; and half that in parallel. In practice they can be much closer, though best to have some space for visibility and consistent temperatures.
~ks