Problem 3-6 Transportation (LO 3.3) Teresa is a civil engineer who uses her automobile for business. Teresa drove her automobile a total of 11,965 miles during 2017, of which 80% was business mileage. The actual cost of gasoline, oil, depreciation, repairs, and insurance for the year was $6,440. If required, round your answers to the nearest dollar. a. How much is Teresa's transportation deduction based on the standard mileage method? $ b. How much is Teresa's transportation deduction based on the actual cost method? $ c. Which method should Teresa use to calculate her transportation deduction? Since the method yields the larger deduction, Teresa should use the method to determine her deduction.