Revocability under the UCC

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The UCC changes the common-law rule for offers by merchants. Under Section 2-205, a firm offer (a written and signed promise by a merchant to hold an offer to buy or sell goods for some period of time) is irrevocable. That is, an option is created, but no consideration is required. The offer must remain open for the time period stated or, if no time period is given, for a reasonable period of time, which may not exceed three months.