Freund, a U.S. west-coast manufacturer, gave Wrench, a hardware retailer who was relocating to the east coast, the following "letter of introduction" to Tuff, an east-coast hardware wholesaler. hardware wholesaler. This will introduce you to my good friend and former customer, Wrench, who will be seeking to arrange the purchase of hardware inventory from you on credit. If you will let him have the goods, I will make good any loss up to $25,000 in the event of his default. /Signed/ Freund Wrench presented the letter to Tuff, who then sold and delivered $20,000 worth of hardware to Wrench on credit. Tuff promptly notified Freund of this sale. Which of the following is NOT an accurate statement concerning the arrangement between Freund and Tuff? 
It was important to enforceability of Freund's promise to Tuff that it be embodied in a signed writing. By extending the credit to Wrench, Tuff effectively accepted Freund's offer for a unilateral contract.  Although Freund received no consideration from Wrench, Freund's promise is enforceable by Tuff.  Freund's promise is enforceable by Tuff whether or not Tuff gave Freund seasonable notice of the extension of credit to Wrench.