Stat Martin has a written agreement for the lease of Gabby’s flat. One of the clauses stipulates that visitors may not stay longer than 10 days. Martin’s sister, Tina, needs to undergo medical treatment for a period of 6 months and Martin telephonically informed Gabby that his sister would come and stay with him. Gabby agrees.3 months later Gabby gives Martin a month’s notice to vacate the premises stating that Martin acted contrary to their agreement. Advise Martine whether a valid contract was concluded in the following instances and motivate your answer: Susan gives Ann N$ 200 as a loan. Ann thinks it is a gift. Blacky is employed by Namdeb (Pty) Ltd. and has acquired some uncut diamonds. He enters into a contract with Donna for the sale of these diamonds without the necessary permit. Anita concludes a contract telephonically with her good friend Ernst for the selling of her one-bedroom flat in the centre of the city of Windhoek. Harry buys a sports car in order to impress the ladies on campus. He wants to return the car, because the ladies still do not find him attractive. Jakes specified in his offer that Donald must respond on or before the 15th of March. Donald accepts the offer on the 16th of March.