Which of the Following Is True of Price Elasticity of Demand

Multiple Choice

Which of the following is true of price elasticity of demand?

A) It measures the responsiveness of quantity demanded or quantity supplied to a change in one of the determinants of demand and/or supply.
B) It is calculated as the percentage change in the quantity demanded of a product divided by the percentage change in the price of that product.
C) It is calculated as the percentage change in the demand for a good divided by the percentage change in income,everything else held constant.
D) It measures the responsiveness of demand to a change in the quantity supplied.
E) It is calculated as the percentage change in the quantity demanded for one good divided by the percentage change in the price of a related good,everything else held constant.