The Fourteenth Finance Commission (FFC) used the following criteria and weights for horizontal distribution of tax proceeds among states: Income Distance (50%), Population (2011) (27.5%), Demographic Change (17.5%), Area (15%), and Forest Cover (7.5%). Arranging the parameters given in the question (Income distance, Population, Demographic changes, Area) in descending order of their weights: Income Distance (50%) > Population (15%). This corresponds to the order 1-2-3-4.