FIGURE 3- 2 -Refer to Figure 3- 2. a Shift of the Supply

FIGURE 3- 2
-Refer to Figure 3- 2. A shift of the supply curve from S to S1 could be caused by

A) a decrease in the price of glass, a major input in the production of energy- efficient light bulbs.
B) a change in consumers' preferences away from ordinary light bulbs toward energy- efficient light bulbs.
C) an expectation that new government regulations will ban the use of energy- efficient light bulbs.
D) an increase in the price of energy- efficient light bulbs.
E) a decrease in the price of energy- efficient light bulbs.