Which of the following does not directly affect the bid/ask spread? a. inventory costs b. order costs c. bank profits d. volume If a U.S. firm needs 100,000 euros in 90 days and wishes to avoid the risk from exchange rate fluctuations, it could a sell euros 90 days from now at the spot rate b. sell a 90-day forward contract on euros. c. purchase a 90-day forward contract on euros d. purchase euros 90 days from now at the spot rate