an aggregate output level of $400 billion, aggregate saving is !!

Refer to the information provided in Table 8.9 below to answer the questions that follow. Table 8.9 All Figures in Billions of Dollars Aggregate Output Aggregate Consumption Planned Investment 100 160 200 20 240 300 20 320 400 20 400 500 20 480 20 Refer to Table 8.9. At an aggregate output level of $400 billion, aggregate saving Select one: a. cannot be determined from this information b. equals $20 billion. di equals - $20 billion, d. equals $0.X