Refer to the Accompanying Diagram to Answer the Following Questions

Multiple Choice

Refer to the accompanying diagram to answer the following questions :

-The demand curve shift shown in the figure was caused by a(n)

A) increase in the input cost of the good.
B) increase in the price of a substitute of the good.
C) decrease in the number of firms selling the good.
D) decrease in the number of buyers in the market for the good.
E) expectation that the future price of this good will be higher than it is currently.