Which of the Following Statements About the Factors That Influence

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

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