中等ECON-DEMA-007
An increase in the price of a complementary good will, ceteris paribus, cause:
A. A rightward shift in the demand curve for the good
B. A leftward shift in the demand curve for the good✓ 答案
C. A movement along the demand curve for the good
D. A rightward shift in the supply curve for the good
解說
Complementary goods are used together. If the complement's price rises, consumers buy less of it, reducing demand for the related good. This shifts the demand curve left, not a movement along the curve.