Which of the Following Describes the BEST Approach for Deploying

Multiple Choice

Which of the following describes the BEST approach for deploying application patches?

A) Apply the patches to systems in a testing environment, then to systems in a staging environment, and finally to production systems.
B) Test the patches in a staging environment, develop against them in the development environment, and then apply them to the production systems.
C) Test the patches in a test environment, apply them to the production systems, and then apply them to a staging environment.
D) Apply the patches to the production systems, apply them in a staging environment, and then test all of them in a testing environment.