Graph shows values along the horizontal axis and vertical axis. Coordinates are plotted to indicate two upward-sloping diagonal lines and two downward-sloping diagonal lines. Line 1 is a downward sloping line with point S at 300,300 and Point U at 200, 400. Line 2 is a downward sloping line with point T at 500, 300. Line 3 is an upward sloping line with Point S at 300, 300 intersecting line 1 at S and also intersecting line 2. Line 4 is an upward sloping line with point T at 500, 300 intersecting Line 2 Use the above graph to answer the following question. Which of the following may occur as a result of an increase in the price of iPods?
Shift from line one to line two
Move from point S to point U
Shift from line two to line one
Move from point U to point S