What is the MOST likely cause of this situation?

A Developer has created an S3 bucket s3://mycoolappand has enabled server across logging that points to the folder s3://mycoolapp/logs.The Developer moved 100 KB of Cascading Style Sheets (CSS) documents to the folder s3://mycoolapp/css, and then stopped work. When the developer came back a few days later, the bucket was 50 GB.

What is the MOST likely cause of this situation?
A . The CSS files were not compressed and S3 versioning was enabled.
B . S3 replication was enabled on the bucket.
C . Logging into the same bucket caused exponential log growth.
D . An S3 lifecycle policy has moved the entire CSS file to S3 Infrequent Access.

Answer: B