a commoditys spot price as of December 31 is $46/unit, and storage costs are $0.84/unit at the end of every month l, starting January 31. if the effective monthly interest rate is .9% (compounded monthly, not continuously), what will be the forward price for delivery at the end of August, assuming the commodity is stored? a. $52.94 b. $56.35 c. 56.53 d. $56.14 e. $56.64