Figure: Supply Shift 2 Price $100 S2 80 S1 60 40 20 0 10 20 30 40 50 Quantity 177. (Figure: Supply Shift 2) Refer to the figure. What would cause the supply curve to shift from S1 to S2? A) a $20 tax reduction on each unit of output B) a $40 tax reduction on each unit of output C) a $40 subsidy reduction on each unit of output D) a $20 subsidy reduction on each unit of output