题目选项分析

Ten years ago, the Salisbury City Council passed the Culinary Bill, new legislation to protect the interests of local non-franchise restaurants. Of the 120 local non-franchise restaurants in Salisbury today, 85 opened during the last ten years. Clearly the Culinary Bill has caused a surge in the number of local non-franchise restaurants operating in Salisbury over the past ten years.

Which of the following is an assumption on which the argument depends?

【选项】Of the local non-franchise restaurants in Salisbury ten years ago, fewer than 85 have closed.