Price of Calculators $27 Domestic Supply A B O 7 World Price 2 Domestic Demand 150 300 400 Quantity of Calculators A. Quantity demanded changes from - to B. Quantity supplied changes from to C. Under free trade how many computers the country will import or export? D. Consumer surplus changes from the area ---- to the area E. Producer surplus changes from the area to the area -- F. Total surplus increases by the area