If a 10 Percent Increase in Income Results in a 10

Multiple Choice

If a 10 percent increase in income results in a 10 percent decrease in the consumption of widgets,then

A) the price elasticity of demand for widgets equals 1.
B) the income elasticity of demand for widgets is negative.
C) the income elasticity of demand for widgets equals 1.
D) widgets are a normal good.
E) the price elasticity of demand for widgets is negative.