the answer is not "none" or "niece's spouse"

Paul is single and has two children, Daniel, age 18, and Chris, age 21. Both sons attend college. Daniel attended college from August through December of the current year. Chris attended college from larnuary April when he gradtuated in the current year: Chris earned $5,500 in the current year. Paul provides over 80% of the financialsupport for his sons. Paul also provides more than 50% of the support for his niece, age 20, who married in October of the current year and filed a joint return with her spouse who had earnings of $52,600. His niece earned $3,800 at a part-time job. Who can Paul claim as a dependent on his tax return? Attempts: 2 of 3 used