Following Is Consumption Schedules for Three Private Closed Economies

Multiple Choice

Following is consumption schedules for three private closed economies.DI signifies disposable income and C represents consumption expenditures.All figures are in billions of dollars.Refer to the data below.Suppose the consumption is increased by $2 billion in each of the three economies.This change could have been caused by:

A) a decrease in consumer wealth.
B) expectations of higher future income.
C) an increase in taxation.
D) an increase in saving.