Demand for Barbara Streisand CDs is equal to Q_s  P^1.70_sI^2.20P^1.80_c, where Qs is the number of CDs, P_s is the price of a Streisand CD, I is per capita income, and Pc is the price of a Karen Carpenter CD.Streisand and Carpenter CDs

A) are inferior goods.
B) are complements.
C) are substitutes.
D) have diminishing returns to scale.
E) are not as good as the original 8-track tapes.

Barbara Streisand CDs

Compact discs containing music recorded by Barbara Streisand, an American singer, actress, and filmmaker.

Karen Carpenter CD

A compact disc featuring the music of Karen Carpenter, an American singer known for her contributions to the duo The Carpenters.

Per Capita Income

The average income earned per person in a certain area, calculated by dividing the area's total income by its total population.