This graphic shows an X-Y axis. The Y-axis shows High Cost at the top and Low Cost at the bottom. The X-axis shows More CPU at the left and More I/O at the right. Three plan icons appear on the axis. Plan 1 is on the lower left. Plan 3 is to the right of Plan 1, but lower down on the Y-axis. Plan 3 is contained within a dotted-line circle. Plan 2 is above and to the right of Plan 1 and Plan 3.