Traditionally, decision-making by managers that is reasoned step-by-step has been considered preferable to intuitive decision-making. However, a recent study found that top managers used intuition significantly more than did most middle- or lower-level managers. This confirms the alternative view that intuition is actually more effective than careful, methodical reasoning.
The conclusion above is based on which of the following assumptions?

(A) Methodical, step-by-step reasoning is inappropriate for making many real-life management decisions.
(B) Top managers have the ability to use either intuitive reasoning or methodical, step-by-step reasoning in making decisions.
(C) The decisions made by middle- and lower-level managers can be made as easily by using methodical reasoning as by using intuitive reasoning.
(D) Top managers use intuitive reasoning in making the majority of their decisions.
(E) Top managers are more effective at decision-making than middle- or lower-level managers


OA E

I am confused with D and E.

I am not finding any solid reason to eliminate choice D.I searched Internet and found that some people has written that the reason for eliminating choice D is they are already mentioned in the premise. But if we read the sentence in the passage carefully( However, a recent study found that top managers used intuition significantly more than did most middle- or lower-level managers). we will found that significantly more than is not same as the word the majority in the sentence " Top managers use intuitive reasoning in making the majority of their decisions."

I found Choice D correct as if we negate it. If we assume that Top managers do not use intuitive reasoning in making the majority of their decisions. Then it will make the conclusion fall apart. Then it cannot be conclude that intuition is actually more effective than careful, methodical reasoning.

There is another question. In assumption question if in the option there is restated premise then we cannot take that option as our answer?