While going to his office, M walks into a shop to purchase a mobile for himself. having selected a mobile, he negotiates on the price of the mobile and reaches an understanding with the shopkeeper for a price of Rs. 40,000/-. The shopkeeper informs M that the mobile would require some fine-tuning including the configuration of the operating system and installation of basic softwares. He tells M that it would take around three hours for doing the same. Both of them agree that M would make the payment and take the delivery of the mobile same day while returning from office. The mobile is duly worked upon and is made ready for delivery after about 3.5 hours. The shopkeeper, however, does not inform M that the mobile is ready but decides to wait for him to come in the evening. In the meantime, one of the shop attendants sells the very same mobile to N by mistake. N saw the mobile on the shelf only and apparently buys it without any knowledge of the earlier transaction by M. Decide M’s and N’s claim on the goods.     (15 Marks)