题目选项分析

State X recently decided to cut state funding for the public library system in County X. To help counteract this cut in funding, the county library system has increased library late fees from $.10 per day to $.12 per day. Since the fee increase, library administrators have seen no decline in the number of overdue books. The director of the county library system concludes that the fee hike has helped to counteract the cut in state funding.

Which of the following statements, if true, most strengthens the director's claim?

【选项】Since the fee increase, there has been no significant change in the average number of days that books are overdue before they are returned.