A Company Is Using an Amazon S3 Bucket to Store

A company is using an Amazon S3 bucket to store data uploaded by different departments from multiple locations. During an AWS Well-Architected review, the financial manager notices that 10 TB of S3 Standard storage data has been charged each month. However, in the AWS Management Console for Amazon S3, using the command to select all files and folders shows a total size of 5 TB. What are the possible causes for this difference? (Choose two.)

A) Some files are stored with deduplication.
B) The S3 bucket has versioning enabled.
C) There are incomplete S3 multipart uploads.
D) The S3 bucker has AWS Key Management Service (AWS KMS) enabled.
E) The S3 bucket has Intelligent-Tiering enabled.