Infоrmаtiоn fоr questions 18-25 The following grаph depicts the supply аnd demand curves for sugar in the US. The world price of sugar under free trade is PW. If the US imposes either a tariff or a quota, the price of sugar in the US goes up to P′, while the world price goes down to P′W. Areas are denoted by lower-case letters, points on the axes are capital letters. Under the tariff / quota, the US’s imports of sugar are equal to the length