题目选项分析

Corporate Officer: Last year was an unusually poor one for our pharmaceutical division, which has traditionally contributed about 70 percent of the corporation's profits. It is therefore encouraging that there is the following evidence that the chemical division is growing stronger: it contributed 25 percent of the corporation's profit up from 10 percent the previous year.

On the basis of the facts stated which of the following is the best critique of the evidence presented above?

【选项】The increase in the chemical division's contribution to corporation profits could have resulted largely from the introduction of a single, important new product