The policy of protectionism is to raise prices for the producers, but as far as prices are concerned, it produces changes in demand and supply that neutralize each other and thus, in the long run, can never result in higher prices. What are these neutralizing changes in supply and demand? 1 An increase in demand and an increase in supply. 2 A decrease in demand and a decrease in supply. 3 An unchanged demand and an unchanged supply. 4 A decrease in demand and a decrease in supply.