【单选题】

Questions 156-158 refer to the following e-mail.

To:Editing staff
From: Jennifer Lopez ＜lopez@sunpubl.com＞
Date: July 20
Subject: Unclaimed print copies
A、box has been placed next to the printer for unclaimed print copies to avoid a mess of papers being left on the printer table at the end of the day.
I’d like to remind you to pick up all your copies as soon as possible after you print them.
This has been the clear guideline for several months now, so please try to follow through with it. It is particularly important that confidential documents be picked up immediately after printing.
Thank you for your cooperation.
Jennifer Lopez
Why does Jennifer Lopez thank the employees
A、To indicate that the managers are pleased
B、To acknowledge their efforts over the last few months
C、To emphasize the importance of their work
D、To encourage them to do what she has asked