A media streaming company stores user activity logs in an Amazon S3 bucket. The logs are accessed frequently for real-time analytics and reporting. The company enforces strict encryption requirements for data stored in S3 and currently uses AWS Key Management Service (AWS KMS) for encryption. The company wants to reduce costs related to encrypting objects in the S3 bucket while maintaining compliance with its encryption requirements and minimizing the number of AWS KMS calls. Which solution will meet these requirements?