Please present an IRAC for the following problem case:

PC 2

Frank Meram attended a presentation by Robert MacDonald, who was promoting his new book, Cheat to Win. MacDonald was a multimillionaire who had started as an insurance agent and built his company, LifeUSA, to a worth of more than a billion dollars at the time of the presentation. Meram attended along with approximately 100 other people. At the beginning of the presentation, MacDonald announced that one of the attendees would leave that day with $1 million. All that was required was to place a business card in the basket that he passed around and to stay until the end of the presentation. MacDonald pulled Meram's business card from the basket. He congratulated Meram and then explained "how this works." MacDonald said Meram would receive one dollar per year for a million years. He gave Meram $100 in cash for the first 100 years. According to MacDonald, all Meram had to do was attend a presentation once a year to claim the rest of the million dollars. MacDonald laughed and thanked everyone for coming. Meram, on the other hand, filed suit against MacDonald and his company's parent, Allianz Sales, seeking the remainder of the promised $1 million. Did MacDonald make a valid offer that Meram accepted by placing his business card in the basket and staying until the end of the presentation?