What can we infer about the recent changes made to the Rule Base?

Examine the following Rule Base.

What can we infer about the recent changes made to the Rule Base?
A . Rule 7 was created by the ‘admin’ administrator in the current session
B . 8 changes have been made by administrators since the last policy installation
C . The rules 1, 5 and 6 cannot be edited by the ‘admin’ administrator
D . Rule 1 and object webserver are locked by another administrator

Answer: D

Explanation:

On top of the print screen there is a number "8" which consists for the number of changes made and not saved.

Session Management Toolbar (top of SmartConsole)