below data. Equilibrium Y - (GDP) is: The letters Y, C, and, I are used to represent GDP, consumption, and, investment respectively. GDP(Y) Consumption(C) Investment(1) $0 $60 $30 100 120 40 200 180 50 300 240 60 400 300 70 500 360 80 Multiple Choice $200 O $300 $400 O $100