Which of the following is NOT mentioned as a difficulty the Fed faces when trying to affect aggregate demand in the short run?

Tracy and Amy are playing a game in which Tracy has the first move at X in the decision tree shown below. Once Tracy has chosen either the top or bottom branch at X, Amy, who can see what Tracy has chosen, must choose the top or bottom branch at Y or Z. Both players know the payoffs at the end of each branch. In the equilibrium this game, Tracy chooses the ________ branch, and then Amy chooses the ________ branch.

A. bottom; top B. top; top C. bottom; bottom D. top; bottom

The rate of unemployment tends to be highest for:

a. White teenagers b. White adult males c. Black adult males d. Black teenagers