Leonardo,who Is Married but Files Separately,earns $80,000 of Taxable Income

Multiple Choice

Leonardo,who is married but files separately,earns $80,000 of taxable income.He also has $15,000 in city of Tulsa bonds.His wife,Theresa,earns $50,000 of taxable income. How much money would Leonardo and Theresa save if they file jointly instead of separately for year 2018? (Use tax rate schedule)  

A) Nothing
B) $103.50
C) $309.75
D) $5,932.50
E) None of the choices are correct.