【单选题】

Questions 164-166 refer to the following memo.

To:All staff
From: Manager of the Maintenance Service Section
Date: September 17th
RE、New Telephone System
Our new telephone system will be installed over the coming weekend and will be operational Monday morning with the new system.
Each staff member will continue to have individual voice mail, allowing callers to leave voice messages for you when you are not available to take a call.Calls can still be routed to the main switchboard if you prefer to continue to have one of the operators take messages for you. In addition, every telephone including the ones in the conference rooms will be set up for conference calls and for long distance calls. You will need to use your employee code to make long distance calls. If necessary, operators can arrange conference calls for you, if given at least thirty minutes’ notice.
There will be a twenty-minute introduction to the system offered inConference Room 3 on Monday at 10:00A、M. , 11:00A、M. , and 1:30 P. M. Please plan to attend one of these sessions so that you will be able to fully utilize the features of our new phone system
What are employees asked to do
A、Leave a message with the switchboard operator
B、Help colleagues unfamiliar with the system
C、Come to work on Saturday or Sunday
D、Learn how to set up a conference call