$2.$

On June $1,$ Harry, a professional maker of jewelry, sent a signed letter to Mauricio, owner of a jewelry shop, offering to sell to Mauricio a gold necklace for $$400.$ In the letter, which accurately described the necklace and indicated the price, Harry wrote: $$I promise to keep this firm offer open to you for $4$ months from today. $($signed$)$ Harry.$$ On September $23,$ Harry sent a letter to Mauricio telling Mauricio that the offer was no longer open. Mauricio received the letter on September $27.$ Later that day, on September $27,$ Mauricio sent a letter to Harry saying, $$I accept your offer of June $1.$ Harry received the letter on October $2.$ Harry refused to deliver the necklace to Mauricio. Mauricio sued Harry for breach of contract.

a$.$ Judgment for whom? Explain.

b$.$ Would your answer to $($a$)$ be different if Harry and Mauricio were both teachers by profession and not in the jewelry business? Explain.