Assignment:
Sunquest Inc., a U.S. corporation, purchases a variety of skin care products from unrelated U.S. suppliers and sells them at a profit to unrelated retailers in Islandia. Sunquest also manufactures cosmetics in the United States and sells them to unrelated retailers in Islandia. Title on all of the sales passes from Sunquest to the purchaser at the international airport in Islandia when the goods arrive.
What is the source of the income realized by Sunquest from these transactions?