Final answer:
Nonresident aliens must check “Single”, claim one allowance, and write “NRA” on Form W-4; hence, all options A, B, and C are correct.
Step-by-step explanation:
When completing a Form W-4, nonresident aliens must perform specific actions, these include: A. Check only “Single” on line 3, regardless of actual marital status, B. Claim only one withholding allowance on line 5, unless from Canada, Mexico, or South Korea, or a student or business apprentice from India, and C. Write “NRA” above the dotted line on line 6 to indicate nonresident alien status. Therefore, the correct answer is “D. All the above.”