An organization migrating legacy file shares to a cloud collaboration platform discovers that several datasets contain regulated records with no documented retention periods or data owners.
The business wants immediate migration to meet a project deadline.
What should the security manager do FIRST?
A. Migrate the data and address ownership and retention after cutover
B. Identify data owners and define retention requirements before migration
C. Apply default retention policies to all datasets to avoid delay
D. Escalate the issue to legal and halt the migration indefinitely