Sal Catron is a U.S. citizen and his wife, Reina, is a nonresident alien. They file a joint return, to which they attach a statement declaring their choice to treat Reina as a resident alien. Which of the following events would end the choice for later years?
            
						
							|  | Sal and Reina file a separate return the next year | 
						
							|  | Sal and Reina fail to attach a statement to their tax return in future years | 
						
							|  | The death of either spouse | 
						
							|  | Sal and Reina live outside the U.S. for an entire tax year |