Doing the process of elimination I would cross out B price for that doesn't have to do with quality (two objects with the same quality can be priced differently) I'll also cross out C label because its meaning is to mark something to identify it and I would cross out A because its meaning would be different variabilities even if their qualities were the same. I would go with D because graded would work on qualities like for example Grade A metal would be a higher quality than Grade B metal.
