Figure 30-6 -Refer to Figure 30-6. Which of the Following Would Cause

Figure 30-6
-Refer to Figure 30-6. Which of the following would cause the change depicted in the figure above?

A) Lack of investment in infrastructure causes Mexican productivity to fall relative to American productivity.
B) A possibility of diseased poultry in Mexico causes U.S. consumers to decrease their preferences for Mexican-raised chickens relative to U.S.-raised chickens.
C) A new trade agreement with Mexico results in the United States removing all tariffs on sugar imported from Mexico.
D) An expansionary monetary policy in Mexico causes an increase in the price level of Mexican goods relative to U.S. goods.