A taxpayer and her husband, have been married for 25 years. In May of this year, the couple divorced. During the year, the taxpayer provided all the support for herself and her 22-year-old son, a full-time student that lived on campus for the school year. Her son is employed and earned $20,000 this year. What is the taxpayer's most favorable filing status for the year? O A. Surviving spouse. O B. Single. O C. Married filing separately. O D. Head of household