中等ECON-DEMA-012
The price of egg tarts rises and no other determinant changes. The supply-side result is:
A. A rightward shift of the supply curve
B. An extension of quantity supplied along the supply curve✓ 答案
C. A fall in quantity supplied
D. A leftward shift of demand
解說
The law of supply: a higher own-price raises quantity supplied. That is a movement along the curve. The curve shifts only when a non-price determinant changes.