(Figure: Determining SRAS Shifts 3) Consider the Shift in Aggregate

Multiple Choice

(Figure: Determining SRAS Shifts 3) Consider the shift in aggregate supply shown in the accompanying figure. Which of these might cause this change in short-run aggregate supply?

A) Unions successfully negotiate higher wages.
B) Subsidies to firms increase.
C) Incomes of consumers decrease.
D) Workers and firms believe that inflation is going to fall.