contestada

Which of the following statement is correct? A.A change in demand is a movement along the demand curse, and a change in the quantity demanded is a shift of the demand curve. B.Both a change in quantity demanded and a change in demand are movements along the demand curse, only in different directions. C.Both a change in quantity demanded and a change in demand are the demand curve, only in different directions. D.A change in quantity demanded is a movement along the demand curve, and a change in demand is a shift of the demand curve.