William Taft's quotation, "The Cabinet is a mere creation of the President's will," suggests that the Cabinet is not mandated by the Constitution but instead is formed at the discretion of the President. This aligns most closely with option B: The Constitution does not mention the Cabinet.
While the Constitution does imply that the President can seek advice from various officers (Article II, Section 2), it does not specifically establish the Cabinet as a required body, meaning the President has the authority to create and appoint Cabinet members based on his own preferences and needs.