Which type of income is generally subject to U.S. income tax withholding if received by a non-resident alien (NRA) of the U.S. Group of answer choices A. U.S. source income which is effectively connected with the conduct of a U.S. trade or business B. Foreign sourse income of a U.S. partnership allocated to a NRA C. Gain from the sale of U.S. personal property D. Gain on the sale of U.S. real property E. All of the above