A User Is Trying to Launch an EBS Backed EC2

Multiple Choice

A user is trying to launch an EBS backed EC2 instance under free usage. The user wants to achieve encryption of the EBS volume. How can the user encrypt the data at rest?

A) Use AWS EBS encryption to encrypt the data at rest
B) The user cannot use EBS encryption and has to encrypt the data manually or using a third party tool
C) The user has to select the encryption enabled flag while launching the EC2 instance
D) Encryption of volume is not available as a part of the free usage tier