3. Rita is 20 years old and unmarried. She lives with her boyfriend, Ali, who is a full-time student and does not work. She works at the campus bookstore and provides all the costs of maintaining the home. 4. Ken is a stockbroker. He divorced his spouse, Phyllis, on December 30, 2022. Their two children live with Phyllis and she pays over half the cost of keeping up their home. What is Ken's filing status?