A Change in Demand Means There Has Been a Shift

A change in demand means there has been a shift in the demand curve, and a change in quantity demanded

A) Results from a change in price of other goods.
B) Means a shortage or surplus will result from holding prices constant.
C) Also means demand has shifted.
D) Means that price has changed and there is movement along the demand curve. Movements along a demand curve are a response to price changes for that good.