Differences in Unemployment Rates Among Young Adults in the United

Differences in unemployment rates among young adults in the United States, France, and Spain will likely persist because

A) the differences in unemployment rates in these countries are caused by cyclical factors.
B) there is no valid economic explanation for why these differences in unemployment rates persist.
C) the unemployment rate among young adults is not an important macroeconomic problem.
D) policies to alleviate this problem involve substantial costs to workers, the firms that hire them, and the politicians who would propose these policies.
E) high unemployment rates among young adults is socially desirable.