In the current year, Sam Dunn provided more than half the support for his wife, his father's brother, and his cousin. Sam's wife was the only relative who was a member of Sam's household. None of the relatives had any income, nor did any of them file an individual or a joint return. All of these relatives are U.S. citizens. Which of these relatives should be claimed as a dependent or dependents on Sam's current-year joint return? A. Only his father's brother. B. Only his cousin. His wife, his father's brother, and his cousin. C. D. Only his wife