Mitch is a director and officer of Numero Uno, Inc. Mitch makes a marketing decision that results in a dramatic decrease in profits for Numero Uno and its shareholders. The shareholders accuse Mitch of breaching his fiduciary duty to the corporation. What is Mitch's best defense against this accusation? Later, the Numero Uno board considers a resolution for the firm to compete with One-of-a-Kind Corporation. Mitch is a director and shareholder of One-of-a-Kind. What is Mitch's responsibility in this situation?