The administrator issues notices to users in the form of announcements, such as the latest software and patch installation notices, etc. Which of the following options for announcements is false?

The administrator issues notices to users in the form of announcements, such as the latest software and patch installation notices, etc. Which of the following options for announcements is false?
A . Announcements can be issued by department.
B . Terminals must have a proxy client installed to receive announcements.
C . If the system issues an announcement and the proxy client is not online, it will not receive the announcement information after going online in the future.
D . Announcements can be issued by account.

Answer: C