The following data, which is in billions of dollars, relates to a national economy: Primary income (net) - 50 bn Secondary income (net) - 20 bn Imports of goods and services + 270 bn Exports of goods and services + 310 bn This economy had a trade of and a current account of surplus; $30bn; surplus; $40bn. surplus; $40bn; deficit; $30bn. deficit; $40bn; deficit; $30bn. surplus; $40bn; deficit; $50bn. surplus; $40bn; surplus; $30bn