You are developing an application that reads credit card data from a Pub/Sub subscription. You have written code and completed unit testing. You need to test the
Pub/Sub integration before deploying to Google Cloud. What should you do?

A. Create a service to publish messages, and deploy the Pub/Sub emulator. Generate random content in the publishing service, and publish to the emulator. B. Create a service to publish messages to your application. Collect the messages from Pub/Sub in production, and replay them through the publishing service. C. Create a service to publish messages, and deploy the Pub/Sub emulator. Collect the messages from Pub/Sub in production, and publish them to the emulator. D. Create a service to publish messages, and deploy the Pub/Sub emulator. Publish a standard set of testing messages from the publishing service to the emulator.