Which solution for accessing the tiles is MOST secure?

An application running on an Amazon EC2 instance needs to securely access tiles on an Amazon Elastic File System (Amazon I tile system. The EFS tiles are stored using encryption at rest.

Which solution for accessing the tiles is MOST secure?
A . Enable TLS when mounting Amazon EFS
B . Store the encryption key in the code of the application
C . Enable AWS Key Management Service (AWS KMS) when mounting Amazon EFS
D . Store the encryption key in an Amazon S3 bucket and use IAM roles to grant the EC2 instance access permission

View Answer

Answer: B