Halaron spots a rosewood bookcase in an antique shop owned by Jim and Belinda, which have a price tag of 17000. Halaron approaches Jim and tells him that she will take the bookcase for $5000. Jim says that it isn't possible but how about $6000? Halaron says no, how about $5,500? Jim says no again, and he tells Halaron that his lowest price is $6000. Halaron does not reply that she will accept the bookcase for $6000 and she steps away from Jim to take a call on her mobile phone. While Halaron is talking on her mobile phone, Jim turns to serve another customer Borala. After finish talking on her mobile phone, Halaron then turns to pay for the bookcase, but Jim says he has already sold it to Borala for $7000. Halaron is unhappy and says that she and Jim had a contract, and the bookcase was hers. (i) As between Halaron and Jim, who made the offer? As between Halaron and Jim, who accepted the offer and was the acceptance valid