Differentiate between a movement along the demand curve and a shift in the demand curve.

• A. Movement along the demand curve occurs when price changes; a shift occurs when non-price determinants change, altering quantity demanded at each price.
• B. Movement along the demand curve occurs when price changes; shift occurs when a non-price determinant changes.
• C. Movement along the demand curve occurs when income changes; shift occurs when price changes.
• D. Movement along the demand curve occurs when quantity demanded changes; shift occurs when the supply curve changes.

Answer: (A)