(a) A shareholder of a close corporation described by Section 21.725 is not liable because of a shareholders' vote or shareholder action without a vote unless the shareholder had the right to vote or consent to the action.
(b) A shareholder of a close corporation, without regard to the right to vote or consent, may not be held liable for an action taken by the shareholders or a person empowered to manage the business and affairs of the close corporation under a shareholders' agreement if the shareholder dissents from and has not voted for or consented to the action.
(c) The dissent of a shareholder may be proven by:
(1) an entry in the minutes of the meeting of shareholders;
(2) a written dissent filed with the secretary of the meeting before the adjournment of the meeting;
(3) a written dissent that is sent to the secretary of the close corporation:
(A) promptly after the meeting or after a written consent was obtained from the other shareholders; and
(B) by certified or registered mail, return receipt requested, or by other means specified in the corporation's governing documents; or
(4) any other means reasonably evidencing the dissent.