Audrey and Ken have been in email contact about the panel beating business that Audrey owns. On 7 March Audrey posts a written offer to Ken offering to sell him his panel beating business to Ken for $25,000. The letter sets out the material terms of the proposed sale. Ken receives the letter on 10 March and posts a return letter on 11 March accepting the offer. On 9 March Audrey emails Ken withdrawing his offer and enters into a contract to sell the business to Anaru for $30,000. Audrey receives Ken's letter of acceptance on March 12th. Required: Advise Audrey whether or not a binding contract has been formed with Ken, or with Anaru, or with both. Support your answer by stating the relevant legal principle(s) and applying them to the problem. Refer to case law to support your answer. Do consider the forms of communication used..