Identify Which of the Following Statements Is True

Identify which of the following statements is true.

A) Aliens, who are U.S. residents, are taxed only on their U.S. income.
B) Capital gains earned in the United States, other than in the conduct of a U.S. trade or business, are taxed to a nonresident alien only if the alien is physically present in the United States for at least 183 days during the tax year.
C) A nonresident alien from a nontreaty country is taxed at a 35% rate on U.S. source investment income without the benefit of any deductions.
D) All of the above are true.