Exhibit 4-4 Demand and Supply Curves

Exhibit 4-4 Demand and supply curves

-In Exhibit 4-4,a movement from A to B is best explained by:

A) an increase in income and in the number of suppliers.
B) an increase in the price of complements and an increase in the price of inputs.
C) an increase in income and a decrease in the number of producers.
D) a decrease in income and an improvement in the technology used to produce the good.
E) an increase in the number of suppliers and a decrease in price of substitutes.