How do income and/or expenditures explain the multiplier effect? a. The income of one person is income to another person. b. The income of one person represents expenditures to another person. c. The expenditures by one person represent income to another person. d. The expenditures by one person are expenditures to another person.Which change in disposable income would lead to the greatest increase in consumption? a. a $45 000 increase in disposable income, if MPC equals 0.4 b. a $29 000 increase in disposable income, if MPC equals 0.5 c. a $58 000 increase in disposable income, if MPC equals 0.2 d. a $23 000 increase in disposable income, if MPC equals 0.6