Melissa recently paid $760 for round-trip airfare to San Francisco to attend a business conference for three days. Melissa also paid the following expenses: $370 fee to register for the conference, $365 per night for three nights lodging, $250 for meals, and $300 for cab fare. (Leave no answers blank. Enter zero if applicable.) (Do not round intermediate calculations. Round your final answer to the nearest dollar amount.)

A).Suppose that Melissa made the trip to San Francisco primarily to visit the national parks and only attended the business conference as an incidental benefit of being present on the coast at that time. What amount of the airfare can Melissa deduct as a business expense?

B) Suppose that Melissas permanent residence and business was located in San Francisco. She attended the conference in San Francisco and paid $370 for the registration fee. She drove 153 miles over the course of three days and paid $190 for parking at the conference hotel. In addition, she spent $430 for breakfast and dinner over the three days of the conference. She bought breakfast on the way to the conference hotel and she bought dinner on her way home each night from the conference. What amount of these costs can Melissa deduct as business expenses? (Use standard mileage rate.)