7. Abner owned a majority of the stock of Lum Company, and he ran the corporation by himself. Abners brother and sister, who agreed to sell all their stock to him, owned the balance of the stock. At the time of the pur-chase, Abner was negotiating a sale of the company, but he did not reveal this fact to his brother and sister. The sale of the company resulted in a great profit to Abner. The brother and sister brought suit to recover the differ-ence. Should the brother and sister succeed? Why?