During the year, Walt who is self-employed travels from Seattle to Tokyo, Japan, on business. His time was spent as follows: two days travel (one day each way), two days business, and two days personal. His expenses for the trip were as follows (meals and lodging reflect only the business portion): Airfare $3,000 Lodging 2,000 Meals 1,000 Presuming no reimbursement, Walt's deductible expenses are: a.$3,500. b.$6,000. c.$4,500. d.$5,500.