A. an improvement in the relevant technique of production.
B. an increase in consumer incomes.
C. some firms leaving an industry.
D. a decline in the prices of needed inputs.
answer:
C. some firms leaving an industry.
A. an improvement in the relevant technique of production.
B. an increase in consumer incomes.
C. some firms leaving an industry.
D. a decline in the prices of needed inputs.
answer:
C. some firms leaving an industry.