Which of the Following Statements About the Factors That Influence

Multiple Choice

Which of the following statements about the factors that influence demand is true?

A) As the price of close substitutes increases, demand for a product increases.
B) As real consumer income increases, demand for a product increases.
C) Changing consumer tastes have little impact on demand for a product.
D) As the availability of close substitutes increases, the demand for a product increases.