At the end of each knowledge document on the IBM Support website is a survey known as
Document Level Feedback. In what way is this used?

A.
They define how well the web interface is delivering the right information.

B.
Comments are sent to the content creator to improve existing documents.

C.
These are summarized for assessing the usability of the product interface.

D.
Allows the individual to request additional information from the knowledge author.