Opportunity Cost Is Evident on the Production Possibilities Frontier (PPF)graph

Multiple Choice

Opportunity cost is evident on the production possibilities frontier (PPF) graph:

A) as you move from one point on the frontier to another point on the frontier.
B) as you move from the origin to any inefficient point.
C) as you move from one unattainable point to an efficient point on the frontier.
D) as you move from an inefficient point to the origin.
E) at any one single point on the graph.