The Director of Your Finance Department Has Asked to Be

The Director of your Finance department has asked to be alerted if two financial auditors share any files outside the domain. You need to set an Admin Alert on Drive Sharing. What should you do?

A) Create a Google Group that has the two auditors as members, and then create a Drive DLP Rule that is assigned to that Group.
B) Create a Content Compliance rule that looks for outbound share notifications from those two users, and Bcc the Director on those emails.
C) Create two Drive Audit Alerts, one for each user, where the Visibility is "Shared Externally," and email them to the Director.
D) Check the Admin Console Dashboard Insights page periodically for external shares, and notify the Director of any changes.