Suppose the United States produces only two goods: barley and smartphones. The following graph shows the United States's current production possibilities frontier, along with six output combinations represented by black points (plus symbols) labeled A to F.
100
80
PPF 60 SMARTPHONES (Millions) 95.36 40 20 + D C + F 0 20 40 60 80 100 BARLEY (Millions of bushels)
Complete the following table by indicating whether each point represents output combinations that are inefficient, efficient, or unattainable. Check all that apply.
Point Inefficient
Efficient Unattainable
A
B
C
D
E
F