仔细阅读理解 — 英语阅读题

Read the following passage and answer the question. When the university library introduced its new borrowing system, reactions among students were mixed. Under the old rule, anyone could keep a book for four weeks, and renewals were unlimited. The new system shortens the borrowing period to two weeks, limits each book to one renewal, and automatically cancels a renewal if another student has placed a hold on the same title. At first, many students complained that the rules were too strict. However, a survey conducted three months later showed that waiting times for popular titles had dropped from an average of three weeks to just four days. Library staff also noted that fewer books were returned damaged, since students no longer kept them for long, casual periods. Some senior students remain unhappy, arguing that long research projects require longer access to a few key sources. The library has responded by creating a separate seven-day reserve shelf for heavily used course materials. What can be inferred about the new borrowing system after three months? A) It satisfied all students because waiting times dropped sharply. B) It reduced waiting times but still left some concerns unresolved. C) It was cancelled because books were often returned damaged. D) It extended the borrowing period from four weeks to seven days.