Patch, a frequent shopper at Soon-Shop Stores, received a rain check for an advertised sale item after Soon-Shop’s supply of the product ran out. The rain check was in writing and stated that the item would be offered to the customer at the advertised sale price for an unspecified period of time. A Soon-Shop employee signed the rain check. When Patch returned to the store one month later to purchase the item, the store refused to honor the rain check. Under the Sales Article of the UCC, will Patch win a suit to enforce the rain check? A. No, because one month is too long a period of time for a raincheck to be effective. B. No, because the rain check did not state the effective time period necessary to keep the offer open. C. Yes, because Soon-Shop is required to have sufficient supplies of the sale item to satisfy all customers. D. Yes, because the rain check met the requirements of a merchant’s firm offer even though no effective time period was stated.