Ling (53) is unmarried and pays 75% of the cost of maintaining a home for her father, Tao (79), who had no taxable income and did not live with Ling. Tao is Ling's qualifying relative dependent, and she will claim him on her tax return in 2022. What is Ling's correct and most favorable filing status for 2022? Single. Married filing separately. Head of household. Qualifying surviving spouse.