Suppose That a Person Discovers That, Ceteris Paribus, When the Price

Multiple Choice

Suppose that a person discovers that, ceteris paribus, when the price of tomatoes increases, the demand for blue cheese decreases. From this he concludes that

A) tomatoes and blue cheese are substitutes.
B) tomatoes are inferior goods and blue cheese is a normal good.
C) tomatoes and blue cheese are complements.
D) the demand curve for tomatoes has shifted to the left.