Last Year,Sheila Bought 6 Pairs of Shoes When Her Income

Multiple Choice

Last year,Sheila bought 6 pairs of shoes when her income was $40,000.This year,her income is $50,000 and she purchased 10 pairs of shoes.Holding other factors constant,it follows that Sheila

A) considers shoes to be a necessity.
B) considers shoes to be an inferior good.
C) considers shoes to be a normal good.
D) has a low price elasticity of demand for shoes.