Keanna and Joanna, Who Are Roommates in Los Angeles, Both

Multiple Choice

Keanna and Joanna, who are roommates in Los Angeles, both received raises from their respective employers. Keanna now purchases more iTunes downloads than before, while Joanna purchases fewer. For Keanna, iTunes downloads are a _____ good; Joanna's income elasticity of demand for iTunes downloads is _____.

A) normal; positive
B) normal; negative
C) inferior; positive
D) inferior; negative