A broadband company uses a delta table named `bills` with Change Data Feed enabled to store the latest bills of all customers. The table is updated whenever a new bill is generated, with only the `bill_date` and `amount` columns being updated for existing customers. If a customer leaves the company, their bill details are deleted from the `bills` table. Which query should be used to retrieve the list of all customers along with the details of their first-ever bill? | Databricks Certified Data Engineer - Professional Quiz