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Cooper has holdings of 250 troy ounces of platinum, currently valued at $800 dollars per ounce. He estimates that the price of platinum will rise to $850 per ounce in two years' time. If the interest rate is 5%, should he sell the platinum today? How come? At what interest rate would Cooper be indifferent between selling today and selling in two years' time? Perform your analysis in excel and provide a written conclusion at the bottom of your analysis