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As a practical matter, businesses frequently use preprinted forms to initiate or respond to an offer to sell a good. These forms usually have some blanks for the particular negotiated terms unique to the transaction. Normally, the offer takes the form of a(n) buyer, and the seller's firm will typically issue an) from the Multiple Choice Invitation to negotiate; offer O firm offer conditional acceptance Invitation to negotiate; acceptance purchase order; acknowledgement form In 2021, Footrace Shoes, Inc., a retail shoe seller, agrees to purchase from Nike, Inc. all of the athletic shoes it will sell to the public during the entire year (As its business strategy, Footrace Shoes, Inc. has decided to sell Nike athletic shoes only). The quantity of shoes is not specified in the contract, and the contract prices for the shoes vary depending on the type and model of shoe. This is an example of a(n) Multiple Choice requirements contract firm offer Output contract unenforceable contract, since the Uniform Commercial Code (UCC) requires quantity to be specified in a contract for the sale of goods