A and B are correct. Representational art relies on a real item from reality. As does abstract, but it is twisted somewhat. Non-representational isn't from an object - it's purely aesthetic, aka psychedelic shapes and patterns.
you would first find out what notes you want. then you would find out if you want it to be a major or a minor scale, then figure out what style of scale you want it to be. Then boom you have a scale
