Which command updates the image change trigger for the deployment config php to use the image phpns/myphp:latest for the container phpapp in namespace phpns?

• A. oc set trigger dc/php --from-image=phpns/myphp:latest -c phpapp
• B. oc set triggers dc/php --from-image=phpns/myphp:latest -c phpapp
• C. oc set trigger dc/php --from-image=phpsns/myphp:latest -c phpapp
• D. oc set trigger dc/php --from-image=phpns/myphp:latest -c webapp

Answer: (A)

The command updates the image change trigger on a DeploymentConfig so that the specified container will use the given image when the trigger fires. It targets the DeploymentConfig named php, sets the trigger to the image reference phpns/myphp:latest, and selects the container to update with -c phpapp. This ensures only the phpapp container’s image source is tied to phpns/myphp:latest, so when that image changes, the deployment can roll out a new revision for that container. Ensure you’re operating in the phpns namespace (or include --namespace phpns) so the command modifies the correct resource. The other options would either point to a different container, reference a misspelled image path, or use a slightly different command form, which would not update the intended container in the right DeploymentConfig.