A recent benchmarking analysis has indicated an IT organization is retaining more data and spending significantly more on data retention than its competitors. Which of the following would BEST ensure the optimization of retention costs?

A. Requiring that all business cases contain data deletion and retention plans
B. Revalidating the organization's risk tolerance and re-aligning the retention policy
C. Redefining the retention policy to align with industry best practices
D. Moving all high-risk and medium-risk data backups to cloud storage