A media company stores millions of high-resolution images in Cloud Storage. Images are accessed frequently during the first 30 days after publication. After 30 days, they are rarely accessed but must be kept for 5 years for compliance. After 5 years, they should be deleted. How can you automate this process most cost-effectively?

Write a Cloud Function triggered by Cloud Scheduler to scan the bucket daily and move or delete files.

Create an Object Lifecycle Management policy to transition objects to Coldline storage after 30 days, and delete them after 1825 days.

Store the images in Nearline storage initially, then manually move them to Archive storage after 5 years.

Use BigQuery to store the images and use partition expiration to delete them after 5 years.