Gordon receives compensation for personal services of $10,000 during the tax year from a British corporation. He is a nonresident alien and was temporarily present in the United States for 89 days during the tax year. Gordon believes that his income for personal services is not considered to be from U.S. sources and is not subject to U.S. taxation. Which of the following statements is correct? Question 5Select one: a. The entire $10,000 is income from a trade or business within the U.S. and will be taxable. b. The $10,000 received by Gordon will be taxable at a flat 30% (or lower treaty rate) and no deductions will be allowed against this income. c. Since he performed these services while he was a nonresident alien temporarily present in the United States for a period or periods of not more than a total of 90 days during the tax year, the $10,000 is not subject to U.S. tax. d. Since he performed personal services for a foreign corporation not engaged in a trade or business in the U.S., his personal services income is not taxable by the U.S