LSAT-23-2-13 (能解析一下经济背景吗)

13. A company with long-outstanding bills owed by its customers can assign those bills to  a collection agency that pays the company a fraction of their amount and then tries to collect payment from the customers. Since these agencies pay companies only 15 percent of the total abount of the outstanding bill, a company interested in reducing losses from long-outstanding bills would be well advised to pursue its debtors on its own.

The argument depends on the assumption that

A) A company that pursues its debtors on its own typically collects more than 15 percent of total amount of the long-outstanding bill that it is owned

B) The cost to a company of pursuing its debtors on its own for payment of long-outstanding bills does not exceed 15 percent of the total abount those bills

answer (A)

各位战友,解这道题需要经济背景吗?