The latest range Ab is also called the rates line or funds line, this is because it limits the maker off Abdominal range in order to A1B1 i.age. to the right of your own range. The latest range Ab demonstrates from the foundation rates of N10 to have for each device of foundation Y and ?420 for each and every unit away from factor X, the manufacturer normally, which have N20, but not possibly buy 20 units regarding basis Y and nothing basis x or the almost every other method round otherwise both.