Would the MPC likely be larger for lower- or for higher-income groups? Why? The MPC would be larger for a lower-income groups, since people with lower incomes typically spend larger portions of their incomes on consumption than people with higher incomes. b higher-income groups, since people with higher incomes typically spend smaller portions of their incomes on consumption than people with lower incomes. c higher-income groups, since people with higher incomes typically spend larger portions of their incomes on consumption than people with lower incomes. d lower-income groups, since people with lower incomes typically spend smaller portions of their incomes on consumption than people with higher incomes.