You need to create an extension codeunit. What does an extension codeunit consist of and
how do you use it? (Each correct answer presents a part of the solution. Choose two.)

A.
It is used as a part of a web service and must not be published.

B.
It is used with a page.

C.
It is used as a part of a web service and must be published.

D.
It is used with a report.

E.
It is used with a query.

Explanation:
Ref: http://msdn.microsoft.com/en-us/library/dd338962(v=nav.70).aspx