You have an App Engine application serving as your front-end. It's going to publish messages to Pub/Sub. The Pub/Sub API hasn't been enabled yet. What is the fa...

You have an App Engine application serving as your front-end. It's going to publish messages to Pub/Sub. The Pub/Sub API hasn't been enabled yet. What is the fastest way to enable the API?

A. Use a service account with the Pub/Sub Admin role to auto-enable the API. B. Enable the API in the Console. C. Application's in App Engine don't require external APIs to be enabled. D. The API will be enabled the first time the code attempts to access Pub/Sub.