You are building a new data pipeline to share data between two different types of applications: jobs generators and job runners. Your solution must scale to accommodate increases in usage and must accommodate the addition of new applications without negatively affecting the performance of existing ones. What should you do?

A. Create an API using App Engine to receive and send messages to the applications B. Use a Cloud Pub/Sub topic to publish jobs, and use subscriptions to execute them C. Create a table on Cloud SQL, and insert and delete rows with the job information D. Create a table on Cloud Spanner, and insert and delete rows with the job information