Leann is a 52 year old widow whose husband died in 2015. During 2016 her 17 year old dependent son lived with her for the entire tax year. Leann's 2016 income consists of 92,000 and interest income of 24,600. She live in a state that does not have a state income tax. During the year she paid home mortgage interest expenses of 19,000 and real estate taxes of 5,000. She also contributed 10,000 in cash to charities. These are her only itemized deductions during 2016.
A: What filing status applies to Leann for 2016?
B: Compute Leann's 2016 taxable income and gross tax.
C: Compute Leann's 2016 taxable income and tax considering that her son is age 26 and does not qualify as a dependent and does not live with her anymore.