The administration likes to consider three options for arrangements in the low, center and high ranges. The low range arrangement offers the absolute minimum in elements and abilities. In any case, this arrangement is by and large the most efficient. The high range arrangement offers many components with usefulness being the prime target, not cost. The high range arrangement may surpass spending plan and timetable limitations. The center range is a trade off arrangement between the low and high range offerings. It is imperative to incorporate the obligatory components in each of the three arrangements; these are not discretionary.
