A Large Organization Has a Single AWS Account

A large organization has a single AWS account. What are the advantages of reconfiguring the single account into multiple AWS accounts? (Choose two.)

A) It allows for administrative isolation between different workloads.
B) Discounts can be applied on a quarterly basis by submitting cases in the AWS Management Console.
C) Transitioning objects from Amazon S3 to Amazon S3 Glacier in separate AWS accounts will be less expensive.
D) Having multiple accounts reduces the risks associated with malicious activity targeted at a single account.
E) Amazon QuickSight offers access to a cost tool that provides application-specific recommendations for environments running in multiple accounts.