The Country of Econoland Produces Two Goods: Textbooks and Widgets

Multiple Choice

The country of Econoland produces two goods: textbooks and widgets.Last year,it produced 200 textbooks and 500 widgets.This year,it produced 250 textbooks and 600 widgets.Given no other information,which of the following could NOT explain the change

A) Econoland experienced a reduction in unemployment.
B) Econoland experienced an improvement in widget-making technology.
C) Econoland acquired more resources.
D) Econoland experienced a high level of emigration out of the country.