题目选项分析

Small-business groups are lobbying to defeat proposed federal legislation that would substantially raise the federal minimum wage. This opposition is surprising since the legislation they oppose would, for the first time, exempt all small businesses from paying any minimum wage.

Which of the following, if true, would best explain the opposition of small-business groups to the proposed legislation?

【选项】The exact number of companies that are currently required to pay no less than the minimum wage but that would be exempt under the proposed laws is unknown.