Which of the Following Explanations Has NOT Been Proposed for the Phenomenon

Which of the following explanations has NOT been proposed for the phenomenon of ego depletion?

A) After people engage in an effortful task, they feel like they are entitled to not self-regulate in a subsequent situation.
B) Engaging in an effortful task drains cognitive control, because the latter is like a muscle that can become fatigued.
C) When people engage in cognitive control, they become more sensitive to a variety of pieces of distracting information coming from the environment.
D) Mental control uses up glucose, which is necessary to have the energy to perform other tasks.