Which are Activity Attachment Enhancements in Spring 11?

Which are Activity Attachment Enhancements in Spring 11?
A . For new organizations, the Attachments related list is now automatically added to task and event records.
B . For existing organizations, the Attachments related list is now automatically added to task and event records.
C . Attachments are now searchable for tasks and events.
D . Unlike before, HTML attachments is always available and can no longer be disallowed.
E . Existing organizations need to manually add the related list to the activity page layout.

Answer: A,C,E