4?. Braden has put up an advertisement to sell his Business Law textbook, for $T5, on a bulletin board outside The Grove on the NSC campus. Gavin meets up with Braden and makes the following statement to Braden: "I am thinking of buying your Bus Law textbook, but it would need to be for a lower price - I am thinking about $60." Braden says: "I accept." Gavin says: \"Not so fast - I am not sure I want your book yet." Braden says: "You just bought it! Better hand over your money now, or I will take you to court!\" What is the status of this negotiation?? a. Gavin made a valid offer to Braden. Braden accepted it, so now they have an agreement. Assuming the other elements of a contract are there, Braden can enforce this in court. b. Gavin's statement was too vague to be a valid offer. Therefore Braden's attempted \"acceptance" will not be effective, and there is no contract that could be enforced in court. c. There was nothing in writing, so the court would not enforce this as a contract anyway