You are on a business trip from Portugal to the United States for 90 days, and you have a per diem expense account of 400 euros, no receipts required. This per diem is advanced to you before the trip (36,000 euros). You deposit it into your checking account and use your Portuguese (euro) credit card to cover your costs while in the United States. After the first two weeks of your trip, the dollar weakens against the euro by 15 percent. What ethical dilemma might this currency fluctuation present for you? How will you handle it?