Suppose the World Economy Is Composed of Just Two Countries

Multiple Choice

Suppose the world economy is composed of just two countries: Italy and Greece. Each can produce steel or chemicals, but at different levels of economic efficiency. The production possibilities curves
For the two countries are shown in the graphs. The assumption made about the domestic production
Opportunity costs in both countries is that they are

A) constant.
B) variable.
C) increasing.
D) decreasing.