You have an App Engine application that needs to be updated. You want to test the update with production traffic before replacing the current application version.
What should you do?
A . Deploy the update using the Instance Group Updater to create a partial rollout, which allows for canary testing.
B . Deploy the update as a new version in the App Engine application, and split traffic between the new and current versions.
C . Deploy the update in a new VPC, and use Google’s global HTTP load balancing to split traffic between the update and current applications.
D . Deploy the update as a new App Engine application, and use Google’s global HTTP load balancing to split traffic between the new and current applications.
Answer: B