请教以下高手，下面这道题题干该如何翻译？尤其是 the chemicals division for the balance是什么意思？

A company’s two divisions performed with remarkable consistency over the past three

years: in each of those years, the pharmaceuticals division has accounted for roughly 20

percent of dollar sales and 40 percent of profits, and the chemicals division for the balance.

Which of the following can properly be inferred regarding the past three years from the

statement above?

(A) Total dollar sales for each of the company’s divisions have remained roughly constant.

(B) The pharmaceuticals division has faced stiffer competition in its markets than has the

chemecials division.

(C) The chemicals division has realized lower profits per dollar of sales than has the

pharmaceuticals division.

(D) The product mix offered by each of the company’s divisions has remained unchaged.

(E) Highly profitable products accounted for a higher percentage of the chemicals division’s

sales than of those of the pharmaceuticals divisions.

我觉得这个应该是化学药品部门，后面的pharmaceuticals，这个应该是医学药品部

门，总归是一个公司两个部门，他们创收的效益以及销售额度，公司作为一个整体来看

待，其中再分别给出数据.

the pharmaceuticals division has accounted for roughly 20 percent of dollar sales and 40 percent of profits, and the chemicals division for the balance.

我的理解是：
PD占销售额的20% 却创造了40%的利润
而C D for the balance 意思也许是 三年中每年保持不变，或者指所销售和得到利润百分比一样，类似销售占10%，利润也占10%。 总之就是没什么变化

我的理解 for the balance 是相对于pharmaceuticals division  的 accounted for roughly 20

percent of dollar sales and 40 percent of profits 

收入和利润是平衡的··