This data represents a hypothetical economy (all figures are in $billions): National Income Disposable Income Consumption $0 $0 $5 40 30 29 80 60 53 120 90 77 160 120 101 Refer to the information above to answer this question. What is the value of the MPS? a. 0.40. b. 0.15. c. 0.25. d. 0.20. e. 0.60