You are writing a Cloud Function that needs to process messages as soon as they are published to a Cloud Pub/Sub topic named order-events.

How should you configure the Cloud Function to achieve this?

Deploy the function with an Eventarc trigger (or --trigger-topic) pointing to the Pub/Sub topic.

Deploy the function with an HTTP trigger and configure Pub/Sub to send a webhook to the URL.

Use Cloud Scheduler to trigger the function every minute to pull messages from the topic.

Write a loop inside the Cloud Function that continuously polls the Pub/Sub topic.