Casey Corporation, a United States corporation, produced (manufactured) Inventory within the United States and sells this Inventory to customers outside the United States with title passing outside the United States. Profit on the sale is $90,000. What is the source of the Casey Corporation's Inventory Sales Income? $45,000 United States source and $45,000 sourced based on location of the pertinent manufacturing (production) assets. $45,000 United States source and $45,000 Foreign source. $90,000 Foreign source. $90,000 United States source