You have 50 Azure SQL databases. You need to notify the database owner when the database settings, such as the database size and pricing tier, are modified in Azure. What should you do?
A. Create a diagnostic setting for the activity log that has the Security log enabled.
B. For the database, create a diagnostic setting that has the InstanceAndAppAdvanced metric enabled.
C. Create an alert rule that uses a Metric signal type.
D. Create an alert rule that uses an Activity Log signal type.