What are a board's options when confronted with dissident shareholders? (Select the best choice below.) O A. Negotiate with the dissident shareholder to come to a solution on which the board and the shareholder can agree. O B. Buy out the shareholder. O C. Ignore the shareholder, which will result in either the shareholder going away or launching a proxy fight, in which case the board will need to expend resources in an attempt to convince shareholders not to side with the dissident. OD. All of the above