Best practice for minimizing costs in AWS

Question:
Which statement is a best practice for minimizing costs?

1. Assume that you won’t be charged for services that you provisioned, but aren’t currently using
2. Enter into long-term contracts for services that you won’t use often to keep prices low
3. Keep services running when you no longer need them to save on costs to re-provision them
4. Delete resources when you no longer need them

Answer:
D - is the correct answer. Delete resources when you no longer need them. Most resources can be provisioned in a few minutes, and there are no extra costs to re-provision them. Also, never assume what you will be billed for. Review pricing for every service that you use