The Figure Given Below Shows the Demand Curves for Five

Multiple Choice

The figure given below shows the demand curves for five products: A, B, C, D, and E.Figure 6.1

-If the demand for product R increases as the price of product S increases, then _____.

A) consumer preferences for S have increased
B) R and S are not related goods
C) R and S are substitutes
D) R and S are complements
E) R is an inferior good