An American firm has just sold merchandise to a British customer for £100,000, with payment in British pounds 3 months from now. The US company has purchased from its bank a 3-month put option on £100,000 at a strike price of \($1.6660\) per pound and a premium cost of \($0.01\) per pound. On the day the option matures, the spot exchange rate is \($1.7100\) per pound. Should the US company exercise the option at that time or sell British pounds in the spot market?