You run the following code:

You need to ensure that the root node of the XML data stored in the Details column is <Order_Details>.
What should you implement?
More than one answer choice may achieve the goal. Select the BEST answer.

A.
A user-defined data type

B.
An XML index

C.
A Data Definition Language (DDL) trigger

D.
A data manipulation language (DML) trigger

E.
An XML schema collection

Explanation:
http://msdn.microsoft.com/en-us/library/ms187856.aspx