Oh how clinical!
I would go with solution c or 1 - or just the third one: Redraw/reconstruct.
This kind of problem usually occurs when either the reference line of the walls aren't headed in the same direction or when the texture has been manually moved, or both.
You should turn on View > On-Screen View Options > Walls & Beams Reference Lines and check the direction of your walls.
And/or you can set the orientation and direction of your texture (and it's vectorial fill) by going to Design > Align 3D Texture > Set Origin.../Set Direction...
That should help I hope.
Cheers,
Link.