Suppose that sterling/USD spot and forward exchange rates are as follows: Spot 90-day forward 180-day forward 1.6080 1.6056 1.6018 What opportunities are open to an arbitrageur in the following situations?

(a) A 180-day European call option to buy 1 for $1.57 costs 2 cents.

(b) A 90-day European put option to sell 1 for $1.64 costs 2 cents.

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