1 (a). Answer the case study below using the law of contract principles. (25 marks) On July 5, Calvin by letter informed Shawna and Beatrice that he was selling his townhouse for $40.5M. He stated in the letter to both ladies that they should let him have their response in the course of post. Shawna and Beatrice received the letter the same day the letter was sent. Shawna on receiving thetetter, responded by posting a letter to Calvin on the 7 th of July stating that she was willing to buy the townhouse at the stated price of $40.5M and enclosed the Manager's cheque for the said sum. The letter posted by Shawna did not reach Calvin. Beatrice called Calvin on the 7hh July and told him that the townhouse was overpriced and she would pay $38M. Calvin laughed at her and told her "only jokers would state that price" and hung up the phone. A few minutes later, Beatrice called Calvin and informed him that she would pay the 540.5M. Calvin stated emphatically "NOI" and hung up the phone. Calvin upon not hearing from Shawna decided to sell the townhouse to Mary on July 12 in exchange for $35M cash and 100 bags of cocaine pellets valued at $5,500,000. When Calvin arrived home with the bays, he discovered that this was all white flour. Shawna went to Calvin's home on July 18 , having not heard from him about the townhouse. Calvin informed her that he did not receive her letter and the Manager's cheque. She is adamant that they have a contract and will sue him for breach of contract. Beatrise also wants the townhouse as she says she has accepted the offer of 540.5M. Calvin is confused and dopes not know what to do. He also wants to know if he can sue Mary for the 55,500,000.00. Advise Calvin as follows. 1. Identify all issues arising 2. Discuss the legal principles and relevant cases 3. Apply the legal principles to the case study 4. Advise Calvin (b) Your boss is unclear of what unilateral mistake of identity means in the law of contract and asks you to explain the legal principles surrounding this defeer. You are also to support your explanation of the legal principles with two relevant cases, one which shows the claimant being snccessfal in pursuing a claim for unilateral mistake of identity and the other where the Court was of the view that the claim did not meet the requirod standard. (lelmarks)