FIGURE 3-2 Refer to Figure 3-2

Multiple Choice

FIGURE 3-2 Refer to Figure 3-2.The movement along the supply curve,S,from point a to point c,could be caused by

A) a decrease in the price of energy-efficient light bulbs.
B) a decrease in the price of glass,a major input in the production of energy-efficient light bulbs.
C) an increase in the number of suppliers of energy-efficient light bulbs.
D) an increase in the price of energy-efficient light bulbs.
E) a decrease in the price of ordinary light bulbs.