Exhibit 19-4 ​ Refer to Exhibit 19-4. as a Consequence of the Depicted

Multiple Choice

Exhibit 19-4 ​

Refer to Exhibit 19-4. As a consequence of the depicted change in the supply of X, the demand curve for Y shifted from D₁ to D₂. It follows that

A) X and Y are substitutes.
B) X and Y are complements.
C) X and Y are inferior goods.
D) demand for Y is price elastic.