Which of the following actions should you take?

You work as a developer at ABC.com. The ABC.com network consists of a single domain named
ABC.com. ABC.com makes use of SQL Server 2012 in their environment.
You have created a new table in an existing database. You want to make sure that a user-defined
function is called to validate the row prior to a new row being added to the table.

Which of the following actions should you take?

A.
You should consider making use of a UNIQUE constraint.

B.
You should consider making use of a PRIMARY KEY constraint.

C.
You should consider making use of an Index.

D.
You should consider making use of a CHECK constraint.

Explanation: