The contracting officer shall insert the provision at AFFARS 5352.225-9004, Submission of Offers in other than United States Currency, when offers are given a choice of submitting offers in United States dollars or in a currency other than United States dollars. When purchase requests and contracts are expressed in foreign currency, the rate of exchange to be used in determining any applicable acquisition thresholds and authorities will be the current Foreign Currency Fluctuation Defense (FCFD) budget rate for the applicable currency.