70.) Your company is planning to move to the AWS Cloud. You need to give a presentation on the cost perspective when moving existing resources to the AWS Cloud. When it comes to Amazon EC2, which of the following is an advantage when it comes to the cost perspective: A. Having the ability of automated backups of the EC2 instance, so that you don't need to worry about the maintenance costs. B. The ability to choose low cost AMI's to prepare the EC2 instances. C. The ability to only pay for what you use. D. Ability to tag instances to reduce the overall cost.