19.- Refer to the figure below. At point

D

, the opportunity cost of making milk is:

A. low because the economy is specializing in making milk.

B. high because productive resources that are better-suited to making movies

are

not

being used to

make milk.

C. high because the economy is not operating efficiently.

D. high because productive resources that are better-suited to making movies

are

being used to

make milk.

E. High because the economy does not have comparative advantag