Your library has been a big hit - more and more book borrowers are flocking to your library the past few weeks. At this time, your planned library expansion to 5000 sq m. and hiring additional employees are on hold. In an effort to serve more borrowers in the least amount of time, you started thinking of ways to improve ways to stack books on your shelves.

You've heard about FIFO and LRU. Which of the policies do you think would improve service? Assume the following:

- you can't add more shelves for now - you've started tagging books that are frequently borrowed

- you've started tagging books that can be borrowed longer than the usual period (more than 1 week)

Be as specific as possible when explaining your answers.