In the context of implementing data governance within an Azure Databricks environment, your project requires the use of Unity Catalog for centralized access control, auditing, and data lineage. Given the importance of cluster security modes in ensuring compatibility with Unity Catalog, consider the following scenario: Your organization is migrating sensitive financial data to Azure Databricks and must adhere to strict compliance standards, including GDPR and CCPA. The solution must balance between security, cost-effectiveness, and scalability. Which of the following cluster security modes are compatible with Unity Catalog, and why is this compatibility crucial for meeting the project's data governance requirements? Choose the single best option.