Which two components should you configure?

You have a Microsoft Azure SQL database.
You need to ensure that you can use the Always Encrypted feature for the database.
Which two components should you configure? Each correct answer presents part of the solution.

A.
the Column Master Key

B.
the database master key

C.
the service master key

D.
transparent data encryption (TDE)

E.
the Column Encryption Key

Explanation:
https://azure.microsoft.com/en-gb/documentation/articles/sql-database-always-encrypted/