Which approach should you use?

Your organization requires that metrics from all applications be retained for 5 years for future analysis in possible legal proceedings .

Which approach should you use?
A . Grant the security team access to the logs in each Project.
B. Configure Stackdriver Monitoring for all Projects, and export to BigQuery.
C. Configure Stackdriver Monitoring for all Projects with the default retention policies.
D. Configure Stackdriver Monitoring for all Projects, and export to Google Cloud Storage.

Answer: D

Explanation:

Overview of storage classes, price, and use cases https://cloud.google.com/storage/docs/storage-classes

Why export logs? https://cloud.google.com/logging/docs/export/

StackDriver Quotas and Limits for Monitoring https://cloud.google.com/monitoring/quotas

The BigQuery pricing. https://cloud.google.com/bigquery/pricing