As part of your organization's security requirements, you must implement a system where all administrative accesses to Google Kubernetes Engine (GKE) must go through an approval workflow. How should you implement this?

*Explanation:* Implement a custom webhook for GKE that integrates with an approval workflow system. A. Incorrect, this doesn't include an approval workflow. B. Incorrect, this would manage access but not include an approval workflow. C. Correct, a custom webhook can be integrated with an existing approval workflow system. D) Incorrect, this only monitors activities but doesn't enforce approvals. E) Incorrect, Binary Authorization is mainly for container images, not administrative access.