Corporate Officer: Last year was an unusually poor one for our chemical division, which has traditionally contributed about 60 percent of the corporation’s profits. It is therefore encouraging that there is the following evidence that the pharmaceutical division is growing stronger: it contributed 45 percent of the corporation’s profits, up from 20 percent the previous year.
On the basis of the facts stated, which of the following is the best critique of the evidence presented above?
(A) The increase in the pharmaceutical division’s contribution to corporation profits could have resulted largely from the introduction of single, important new product.INCORRECT. Even if it is from one product, there is reason to applaud the growth
(B) In multidivisional corporations that have pharmaceutical divisions, over half of the corporation’s profits usually come from the pharmaceuticals.INCORRECT. Does not make sense
(C) The percentage of the corporation’s profits attributable to the pharmaceutical division could have increased even if that division’s performance had not improved.CORRECT. This clearly shows that the reason for the increase in profits is not improvement. Therefore no reason to applaud the pharma division
(D) The information cited does not make it possible to determine whether the 20 percent share of profits cited itself an improvement over the year before.INCORRECT. 20% is an improvement whichever way you look at it
(E) The information cited does not make it possible to compare the performance of the chemical and pharmaceutical divisions in of the percent of total profits attributable to each.INCORRECT. Misleading. We are not comparing the two, we are only trying to see whether there is reason to believe that the pharma division has improved or not

Hope this helps

I think C only makes sense
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I will go with C
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I find C & E equally good....

C states pharma doesn't need to perform good to get given result.

E states we don't know company has only these 2 divisions.......