The manager of the shoe department of a large department store noticed that mukluks were flying off the shelf in anticipation of another exceptionally cold winter, and he realized that he needed to order more. on november 1, the manager phoned a local manufacturer of mukluks and placed an order for 100 pairs, at a cost of $90 a pair, the price listed in the manufacturer's catalogue, which the manager had consulted before placing his order. two days later, the manufacturer mailed the manager a letter stating that the mukluks were now $105 a pair and that they would be shipped to him on november 17. the manager received the letter on november 5, but he never responded. on november 17, the manufacturer shipped the mukluks to the department store, but it was not a perfect tender, and the manager filed suit for breach of contract. assuming that the parties' communications were sufficient to form a contract, on what day was the contract formed? a november 1, the day the manager placed his order. b november 3, the day the manufacturer sent its letter. c november 5, the day the manager received the letter. d november 17, the day the mukluks were shipped.