Assignment task: Donna and Karl were negotiating over the price of a car. Donna stated, "I offer my 1965 Mustang to you for $50,000." Karl replied, "Well, that seems a bit steep. I offer $40,000 for the Mustang instead." The next day, Karl phoned Donna and said, "OK, I'm willing to pay $50,000 for the Mustang." Donna refused to sell the vehicle. If Karl institutes an action against Donna, the court will likely find that: Karl should win, because both he and Donna agreed to a price of $50,000 for the Mustang Karl should win, because a reasonable person would think that Donna made a serious offer through her conduct Donna should win because Karl failed to properly accept her offer, which remains valid Donna should win, because her valid offer created a power of acceptance in Karl, which he chose to reject and therefore eliminate with his counteroffer