What can you do with the Collaboration Center in Backoffice? Note: There are 3 correct Answer to this question

What can you do with the Collaboration Center in Backoffice? Note: There are 3 correct Answer to this question
A . Create a new workflow template
B. Work on a specific task assigned by a workflow
C. Monitor a workflow by seeing the finished and current steps
D. Start a workflow by dropping items into the collaboration center
E. Assign the user to the Visible for Principal group

Answer: B,C,D