Four graphs plotting price versus quantity.Graph A. The horizontal axis is labeled quantity. The vertical axis is labeled price. The graph plots 2 falling lines D 1 and D 2 and a rising line S. Line D 1 lies below line D 2. Line D 1 intersects line S at point E 1 corresponding to quantity Q 1 and price P 1. Line D 2 intersects line S at point E 2 corresponding to quantity Q 2 and price P 2. As line D 1 shifts to D 2, price P 1 increases to price P 2, and quantity increases from Q 1 to Q 2. Graph B. The horizontal axis is labeled quantity. The vertical axis is labeled price. The graph plots 2 falling lines D 1 and D 2 and a rising line S. Line D 1 lies above line D 2. Line D 1 intersects line S at point E 1 corresponding to quantity Q 1 and price P 1. Line D 2 intersects line S at point E 2 corresponding to quantity Q 2 and price P 2. As line D 1 shifts to D 2, price P 1 decreases to price P 2, and quantity