A solutions architect must copy objects from an S3 bucket in one AWS account to a new S3 bucket in another account using the AWS CLI. Which combination of steps will allow the copy to succeed? (Choose three.)

To copy objects between S3 buckets in different accounts using aws s3 sync, the user performing the sync (in this case, a user in the destination account) needs permissions to read from the source and write to the destination. The bucket policy on the source bucket grants the destination account explicit permission to s3:ListBucket and s3:GetObject on the source bucket. This is crucial for cross-account access. The IAM policy attached to the user in the destination account provides the necessary permissions for that user to s3:ListBucket and s3:GetObject on the source bucket, and s3:ListBucket, s3:PutObject, and s3:PutObjectAcl on the destination bucket. This combined with the source bucket policy allows the destination user to read from the source and write to their own bucket. Finally, running aws s3 sync as a user in the destination account leverages these permissions to perform the copy. Running it from the source account would require the source account to have write permissions to the destination bucket, which is less secure and not the standard approach for pulling data.