AWS Certified Security - Specialty (#33)

A company plans to migrate a sensitive dataset to Amazon S3. A Security Engineer must ensure that the data is encrypted at rest. The encryption solution must enable the company to generate its own keys without needing to manage key storage or the encryption process. What should the Security Engineer use to accomplish this?

Server-side encryption with Amazon S3-managed keys (SSE-S3)
Server-side encryption with AWS KMS-managed keys (SSE-KMS)
Server-side encryption with customer-provided keys (SSE-C)
Client-side encryption with an AWS KMS-managed CMK