From EHOW.COM - my underlines and bold type
Instructions
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- 1Lay the planks at right angles to the floor joists or at a 45 degree angle to the joists, unless the subfloor has been reinforced. Flooring parallel to the joists on a non-reinforced floor will dip down over time
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- 2Run your hardwood planks in the same direction that traffic moves. If you install flooring perpendicular to traffic flow, it causes a sense of blockage. Flooring generally runs the long way in a hallway, for instance.
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In our house the boards are perpendicular to the floor joists and run the long way in the hallway.
Similar to your Plan A. #2 above talks about running the planks in the hallway in the direction that traffic moves.
Nan
Edited to add - you may just want to read the whole page! Haha!
http://www.ehow.com/how_5802277_deci...ood-floor.html