Your team is developing a new application that is packaged as a container and stored in Artifact Registry. You are responsible for configuring the CI/CD pipelines that use Cloud Build. Containers may be pushed manually as a local development effort or in an emergency. Every time a new container is pushed to Artifact Registry, you need to trigger another Cloud Build pipeline that executes a vulnerability scan. You want to implement this requirement using the least amount of effort. What should you do?

A. Configure Artifact Registry to publish a message to a Pub/Sub topic when a new image is pushed. Configure the vulnerability scan pipeline to be triggered by the Pub/Sub message. B. Configure the Cloud Build Cl pipeline that publishes the new image to send a message to a Pub/Sub topic that triggers the vulnerability scan pipeline. C. Configure Artifact Registry to publish a message to a Pub/Sub topic when a new image is pushed. Configure Pub/Sub to invoke a Cloud Function that triggers the vulnerability scan pipeline. D. Use Cloud Scheduler to periodically check for new versions of the container in Artifact Registry and trigger the vulnerability scan pipeline.