You need to import user profile information from Active Directory and from SQL1

You have a SharePoint Server 2013 server farm.
You have a custom Microsoft SQL Server database named SQL1. SQL1 has a table that contains
expertise information about users. The following is an extract of the table.

You need to import user profile information from Active Directory and from SQL1. What should you
use?

A.
Profile synchronization and Business Connectivity Services (BCS)

B.
SharePoint Active Directory Import and External Identify Manager

C.
External Identity Manager and the Secure Store Service

D.
SharePoint Active Directory Import and Business Connectivity Services (BCS)

Explanation:
You can import profile data from business systems by using the Business Connectivity Service.