Allie wrote a letter to Buddy on May 2 and offered to sell 200 tons of scrap metal at $180 per ton. Buddy received this letter on May 4. A few weeks later, Buddy checked the price of scrap metal, and discovered that the market price had risen to $185 per ton. On May 25, Buddy wrote to Allie accepting Allie's offer. Allie did not receive this letter until May 30. Allie refused to sell the scrap metal to Buddy at $180 per ton, but expressed a willingness to sell at the current market price, which was $187 per ton. Is there a contract between Allie and Buddy? Explain