Dean,a Director of a Business Consultancy Firm,holds a Meeting of the Board

Dean,a director of a business consultancy firm,holds a meeting of the board of directors of the company.During the voting process over a critical issue,Dean unscrupulously casts two votes instead of the one that he is entitled to.Dean's conduct is an example of a ________.

A) breach in the duty of obedience
B) denial of the right of refusal
C) piercing of the corporate veil
D) violation of the business judgment rule