Question 19 0.25 pts In 1947, Leontief's empirical study of the factor-content of US exports and imports found, much to researchers surprise, that the US (a high wage country) appeared to be heavily involved in the export of labor-intensive products. This "paradox" was resolved by: Abandoning the Heckscher-Ohlin theory Assuming that most US trade takes place on informal markets and is never recorded. Recognizing that different types of labor (skilled and unskilled) are essentially different factors of production. O Acknowledging that the US is a labor abundant country. Question 20 0.25 pts Under conditions of external economies of scale: Low-wage countries attract firms from these industries. Firms grow very large. Industries grow very large. Firms in an industry cluster in one geographical location