Figure 2-9 -Refer to Figure 2-9,Panel (A)and Panel (B).A Shift of the Shift

Multiple Choice

Figure 2-9

-Refer to Figure 2-9,Panel (a) and Panel (b) .A shift of the economy's production possibilities frontier from Panel (a) to Panel (b) could be caused by

A) unemployment.
B) an improvement in donut production technology.
C) an improvement in coffee production technology.
D) an improvement in both donut and coffee production technology.