Mandy owns a small business and travels to San Francisco for a conference related to this business note that San Francisco is located inside the United States during the trip she paid $100 a night for three nights lodging $600 and airfare $50 a day for meals and $50 a day for a rental car Mandy spent two days on this business and spend the last day sightseeing what amount of airfare can she deducted as a business expense round to the nearest dollar.

a. $600

b. $300

c. $0

d. $300

e. $400