A U.S. firm sells merchandise today to a British company for £150,000. The current exchange rate is $1.55/£ , the account is payable in three months, and the firm chooses to avoid any hedging techniques designed to reduce or eliminate the risk of changes in the exchange rate. The U.S. firm is at risk today of a loss if:A) the exchange rate changes to $1.52/£.B) the exchange rate changes to $1.58/£.C) the exchange rate doesn't change.D) all of the above