You are using Business Connectivity Services to design a SharePoint 2010 application that
connects to an external database. The database users have accounts for authentication that
are different from their Active Directory accounts. You have a requirement to allow users to
connect to the external database without prompting the user for credentials. You need to
store user credentials and use these credentials when connecting to the external database.
Which approach should you recommend?

A.
Create a target application that uses the Secure Store Service. Select the Connect with
User’s Identity option when creating the connection to the database

B.
Create a target application that uses the Single Sign-On Service. Select the Connect with
User’s Identity option when creating the connection to the database.

C.
Create a target application that uses the Microsoft Single Sign-On Service. Select the
Connect with Impersonated Custom Identity option when creating the connection to the

database.

D.
Create a target application that uses the Secure Store Service. Select the Connect with
Impersonated Custom Identity option when creating the connection to the database.