Which two actions should you perform?

Your development team uses Microsoft Visual Studio Team Foundation Server (TFS) 2012 to develop and
support an enterprise-wide web application. The system is too large to perform a manual smoke test.
You need to ensure that the latest release to production has not broken anything. Which two actions should
you perform? (Each correct answer presents part of the solution.
Choose two.)

A.
Create a new build definition with your tests configured for the production URI(s). Run the tests and have
TFS report success or failure.

B.
Create a new virtual machine in Microsoft Test Manager (MTM) that mirrors your production environment.
Create a new build that runs your test projects andhave TFS report success or failure.

C.
Create a series of CodedUI Tests in Microsoft Visual Studio.

D.
Create a complete set of unit test projects within Microsoft Visual Studio 2012.

Explanation:
B / C ?