Answer:B. Sell a futures contract on francs.
Explanation: Futures contracts are contracts that involves the legally agreed purchase or sale of an asset,a commodity or a foreign currency at a given price in a specified period in the future.
Most organisations and Government agencies go into futures contracts especially in situations where foreign exchange is expected to rise in future. THE OBLIGATION OF THE BUYER IS TO ENSURE THAT HE OR SHE BUYS THE ASSET, COMMODITY or CURRENCY WHEN THE FUTURES CONTRACTS EXPIRES.