Rebecca owns and runs an auto repair shop that is assessed an environmental fine of $2,500 by the state government for failing to properly dispose of used engine oil. Rebecca incurs $1,500 in legal fees to fight this assessment, but does not prevail. She also contributes $2,000 to the political campaign of a gubernatorial candidate who is a lawyer by profession and who specifically promises to simplify the environmental ordinance under which Rebecca's fine was assessed. Considering the above facts, what total amount is deductible on Rebecca's business tax return?
a. $0
b. $1,500
c. $3,500
d. $6,000