15. Zinc Corporation, a US company, purchased goods from Porter Retailers, a foreign manufacturer. The transaction was denominated in a foreign currency and Zinc entered into a forward contract on the date of purchase. Zinc should record any gain or loss on the forward contract due to the fluctuation of the foreign currency a) on both the balance sheet date and the settlement date. b) on only the transaction date. c) on both the transaction date and settlement date. d) on both the transaction date and balance sheet date