The Income Elasticity of Demand for Good X Is -

The income elasticity of demand for good X is - 3. Other things being equal, which of the following is true?

A) In order to predict the effect of an increase in consumers' income on either the quantity of good X demanded and supplied or the total revenue of the suppliers of good X, we must first know the price elasticity of demand for good X.
B) An increase in consumers' income will increase the total expenditure on the product by consumers.
C) An increase in consumers' income will decrease the total revenue of suppliers of good X.
D) A 3% increase in consumers' income will lead to a 1% decrease in the quantity of good X demanded and supplied.
E) A 1% increase in consumers' income will lead to a 3% increase in the quantity of good X demanded and supplied.