What does the "Server Side Encryption" option on Amazon 53 provide?

What does the "Server Side Encryption" option on Amazon 53 provide?
A . It provides an encrypted virtual disk in the Cloud.
B . It doesn’t exist for Amazon 53, but only for Amazon EC2.
C . It encrypts the files that you send to Amazon 53, on the server side.
D . It allows to upload fi les using an SSL endpoint, for a secure transfer.

Answer: A