You are a system administrator managing a pool of database servers. Your software vendor releases a service pack, with many new features. What should you do? (Choose TWO.)

A.
Eliminate the testing phase of change control.

B.
Read the release notes.

C.
Refuse to install the service pack.

D.
Install the service pack on all production database servers.

E.
Install the service pack on a database server, in a test environment.