Use the Following to Answer Question(s)

Multiple Choice

Use the following to answer question(s) :
Exhibit: Sugar and Freight Trains

-(Exhibit: Sugar and Freight Trains) The "bowed-out" shape of the production possibilities curve shown here demonstrates:

A) that freight trains cost more than sugar.
B) that sugar costs more than freight trains.
C) that the opportunity cost of additional freight trains increases as the economy produces more and more of them.
D) that the opportunity cost of additional freight trains decreases as the economy produces more and more of them.