What Is the Difference Between Production Possibilities Frontiers That Are

Multiple Choice

What is the difference between production possibilities frontiers that are bowed out and those that are linear?

A) Bowed out production possibilities frontiers illustrate tradeoffs, whereas linear production possibilities frontiers do not.
B) Bowed out production possibilities frontiers show increasing opportunity cost, whereas linear ones show constant opportunity cost.
C) Bowed out production possibilities frontiers are the result of perfectly shiftable resources whereas linear production possibilities frontiers are not.
D) Bowed out production possibilities frontiers illustrate real world conditions less than linear production possibilities frontiers.