Which of the Following Is NOT a Reason Provided as to Why

Which of the following is NOT a reason provided as to why the chairman and chief executive of a company should not be the same person?

A) Both roles require significant time commitments that would make it difficult for one person to be effective at both.
B) The chairman, as a member of the board of directors, is responsible for the appointment, remuneration and performance of the chief executive.
C) Combining the chairman and the chief executive gives one person considerable power over both the strategic direction and the operations of the company.
D) Because the chief executive and chairman sit on the board of directors this would give one person two votes at the board.