Irene, age 37, maintains a home for herself and supports three other people: Dirk, Pat, and Ralph. Dirk, age 42, is Ireneʼs boyfriend who has lived with her since October. He is unemployed and collected unemployment compensation of \($18,000\) for the current year. Pat, age 35, is Ireneʼs sister who lives in an apartment in the same town as Irene. Irene provides more than 50% of Patʼs support, and Pat earns \($4,000\) at a part-time job. Ralph, age 10, was adopted by Irene in the current year, and he has lived with Irene since March. She provides all of his support. What is Ireneʼs filing status, and who may she claim as a dependent?