Match the terms with their definitions:
| List I | List II |
| a) MPC | 1.) Change in savings per unit change in income |
| b) MPS | 2.) Change in consumption per unit change in income |
| c) APS | 3.) Savings per unit income |
| d) APC | 4.) Consumption per unit income |
a-2, b-1, c-3, d-4
a-1, b-2, c-4, d-3
a-3, b-4, c-1, d-2
a-4, b-3, c-2, d-1